Digital Full Dome Planetarium Theater
The Bishop Planetarium is the region’s premier astronomy education facility, as well as a multimedia theater for films, lectures, live music and digital art performances. The Planetarium is a foundational component of the South Florida Museum’s Mission: To engage and inspire learners of all ages; we protect, interpret and communicate scientific and cultural knowledge of Florida, the world, and our universe. The new Planetarium system – the Digistar 5 dual Projection System installed in October 2013 – improves the viewer experience of the Museum’s expanding full-dome show library with projectors that are more than three times as bright and twelve times crisper (higher contrast) than the previous projectors. The system allows for exploration of Earth through the use of 200 continually updated satellite datasets of our planet’s land, ocean, atmosphere and climate and live Bing and OnTerra views of the entire planet.
“We waited for the new Digistar system to be released, and I'm happy to say that I'm glad we did,” says Bishop Planetarium Director Jeff Rodgers. “The projection is bright, crisp and beautiful. And the new astronomy software is simply amazing. The stars in the night sky look fantastic, but there's so much more. We have a digital, three-dimensional map of the entire universe. We can lift off from Earth and fly out of our solar system, out of our galaxy, and out to the very edge of the universe. Or we can orbit Earth, using satellite data to observe and understand our planet in a whole new way. It's hard to imagine a more powerful set of tools for exploring our universe and our place in it.”
Incorporating unidirectional stadium style seating and a digital 25,000 watt Dolby 5.1 surround sound system, the Bishop Planetarium Theater is capable of accommodating a wide range of programs, from lectures to film series to live performances. But first and foremost, the planetarium is a remarkable astronomy education resource, allowing visitors to explore their universe through traditional live star talks and immersive virtual journeys to the far reaches of the cosmos.
2016 marks the 50th anniversary of the Bishop Planetarium — the Gulf Coast's premier astronomy education facility. Just for fun, we pulled together a few lesser-known space-related facts that we thought you would enjoy (cocktail party fodder, perhaps?) Be sure to check back every week for the new fun fact.
Week 1: George Lucas wasn’t a stickler about space science. In “Star Wars Episode IV: A New Hope,” Han Solo says to Luke and Obi Wan, “You've never heard of the Millennium Falcon? It's the ship that made the Kessel Run in less than twelve parsecs." A parsec is used by astronomers to measure distance, not time. One parsec equals 19 trillion miles, so Han is saying the Millennium Falcon made the Kessel Run in less than 228 trillion miles.
Week 2: Sixteenth-century Danish astronomer Tycho Brahe, for whom the Tycho Crater on the moon was named, was the first person to make precise observations of planetary motion and describe what are now known as supernovas. On a less scientific (but more tabloid-worthy) level: 1) In 1566, Tycho lost part of his nose in a sword duel and spent the rest of his life wearing a nose made of silver and gold; 2) in 1601, he refused to leave the table to relieve himself during a banquet because doing so would have been a breach of etiquette. He ended up getting a urinary infection that ultimately killed him. According to his epitaph: "He lived like a sage and died like a fool.”
Week 3: In a few billion years, our sun, which is a yellow, main-sequence star, will become a red giant before collapsing to become a white dwarf and then an expanding series of gas shells called a planetary nebula. Interestingly, the planet Krypton was a red giant on the verge of its own demise when Jor-El sent Kal-El to Earth in Superman. So, as soon as our sun turns red, should we send a bunch of our kids to planets with yellow suns so they can become Supermen (and women)?
Week 4: The end of the world as we know it? In 1989, Elaine, a guest on Peter Venkman’s television program World of the Psychic, said, “According to my sources, the world will end on February 14, in the year 2016. I received this information from an alien. As I told my husband, it was in the Paramus Holiday Inn. I was having a drink at the bar, alone, and this alien approached me. He started talking to me. He bought me a drink, and then I think he must have used some kind of ray or a mind-control device, because he forced me to follow him to his room, and that’s where he told me about the end of the world.” Name that movie… quick, before it all ends!
Week 5: In 1930, 11-year-old Venetia Katharine Douglas Burney of Oxford, England, was the first to suggest Pluto as the name the planet discovered earlier that year by Clyde Tombaugh. Young Katharine, daughter of the Oriel Professor of the Interpretation of Holy Scripture at Oxford, and granddaughter of Falconer Madan, librarian at Oxford’s Bodleian Library, knew that the Greek god Pluto was the god of the underworld and lived where the sun didn’t reach. Smart kid. And where do the English come up with those great names?
Venetia died in 2009, but not before a movie about Pluto was filmed, which included interviews with her. Watch the trailer or listen to a 2006 NASA interview with Venetia.
Week 6: Even the smartest people screw up from time to time. Galileo was certainly a smart guy, and he screwed up at least once, big time. As every space fan knows, Galileo’s observations of the sun, moon, Jupiter and Venus helped prove that the sun, and not the Earth, is the center of the solar system. Galileo’s big goof? He thought tides are caused by the Earth’s rotation on its axis and revolution around the sun. But, as every saltwater fisherman knows, tides are caused by the gravitational pull of the moon. When astronomer Johannes Kepler proposed in 1609 that the moon was, indeed, the cause of the tides, Galileo called the idea “a lamentable piece of mysticism.”
Week 7: Walk up to any astronomer or astronomy student and say, “Oh, be a fine girl: Kiss me,” and he or she will not think you are hitting on him or her. Rather, the astronomer or student will know that you are reciting the mnemonic device for the spectral classifications of stars. You see, stars are classified by their spectral characteristics; there are seven classifications, designated O, B, A, F, G, K, M (the hottest stars, 53,000 degrees to 107,000 degrees, are Class O; the coolest stars, 3,100 to 5,800 degrees, are Class M; our sun is Class G, stars ranging from 8,500 to 10,000 degrees). The classifications and the mnemonic device are the brainchild of Annie Jump Cannon, who worked at the Harvard College Observatory from 1896 to 1940. Despite developing the star classification still in use today, despite becoming the first recipient of an honorary doctorate from Oxford, and despite being the first woman elected an officer of the American Astronomical Society, she and other woman at the Harvard observatory (who made 25 cents an hour) were criticized for being “out of their place,” because they were doing science instead of making babies. In fact, The Woman Citizen magazine wrote of Cannon in June 1924: “The traffic policeman on Harvard Square does not recognize her name. The brass and parades are missing. She steps into no polished limousine at the end of the day’s session to be driven by a liveried chauffer to a marble mansion.” But these days, any astronomer or astronomy student worth his or her salt should, from time to time, conjure up the spirit of Annie Jump Cannon and whisper, “Oh, be a fine girl: Kiss me.”
Week 8: Scott Kelly’s recent return from the International Space Station after setting the American record for time in space on a single mission — 340 days — got us wondering about other human space firsts. Our meandering through NASA’s history archives led us to Dr. Mae C. Jemison, a physician and engineer who in 1992 became the first female African American in space. She flew aboard Space Shuttle Endeavor from the Kennedy Space Center, logging 190 hours, 30 minutes and 23 seconds in space. She was the science specialist in a cooperative mission between the U.S. and Japan (she speaks fluent Japanese, among other languages) and was co-investigator on a bone-cell experiment. As if that weren’t impressive enough, she’s got another first that we love: She’s the first former astronaut to appear on a Star Trek episode. As a girl, Jemison watched Star Trek and dreamed of going into space. Since active-duty astronauts are not permitted to participate in private productions, her brief stint in a speaking role as the Enterprise’s Lt. Palmer in Star Trek: The Next Generation (“Second Chances,” season six, episode 24) took place in 1993 after she left NASA. Learn more about Jemison in this great clip from NOVA’s Secret Life of Scientists and Engineers. You can also watch this amazingly accomplished woman (did we mention she was also a Peace Corps physician?) talk about the impact Star Trek had on her life and how much fun she had being on the show in this clip from a 1994 C-Span interview.
Week 9: In honor of St. Patrick's Day (or La Feile Padraig, as they say in Gaelic), when everybody is Irish (Tabhair pog dom, is Eireannach me - Kiss me, I'm Irish), we're going to look at some Irish astronomy, modern and ancient. On the modern side, we have Irish folk such as Edward Cooper and Andrew Graham, who spent eight years during the 1830s at Markree Castle, County Sligo, measuring the positions of 60,000 stars. Then there's William Wilson of County Westmeath, who determined the temperature of the Sun's visible surface, and Agnes Mary Clerke of County Cork, whose 1903 book Problems in Astrophysics was a major influence on astrophysicists (fun fact: The lunar crater Clerke is named for her). Another modern Irish marvel is a 72-inch reflecting telescope (the instrument's mirror was 6-feet in diameter), built between 1842 and 1845 by William Parsons, 3rd Earl of Rosse, at Birr Castle, Parsonstown, County Offaly, which was the world's largest telescope during the 19th century (fun fact: Locals called it the Leviathan of Parsonstown). The ancient Irish had some cool astronomical stuff, too, including large standing stones and embanked enclosures that marked the solstices and equinoxes. But nothing was cooler than Newgrange in County Meath, which was built about 3,200 B.C., before Stonehenge and the Great Pyramids of Giza. It's a massive earth and stone mound (43,560 square feet, 40 feet high), and at dawn on the winter solstice, sunlight enters a window and lights up a 60-foot corridor that leads to a room containing ancestral bones. So, given Ireland's illustrious astronomical history, all we can say on this St. Patrick's day is Erin go bragh (Ireland forever) and Pionta Guinness, le do thoil (A pint of Guinness, please).
Week 10: Did you know March 20 was Extraterrestrial Abductions Day? In "The Abduction Experience: A Critical Evaluation of Theory and Evidence," Journal of UFO Studies, 1995/96, Stuart Appelle states: "The abduction experience continues to be a phenomenon in need of an explanation. For the sake of science - and the sake of the experiencers - a continuing effort to establish an explanation is both necessary and appropriate." Important abduction experiencers include Elaine (see Week 4, Feb. 9), Barry (see Close Encounters of the Third Kind), Russell Casse (see Independence Day). Possible abduction experiencers include Judge Crater, Jimmy Hoffa, and our car keys just about every other day.
Week 11: Hard to believe that it's been 50 years since Luna 10 made space news. In case you weren't around back then, on March 31, 1966, the Soviet Union launched Luna 10 from the Baikonur Cosmodrome; four days later, the 59-inch tall, 539-pound spacecraft became the first man-made object to orbit the moon. Luna 10's mission was to study gamma radiation, electric and magnetic fields, micrometeoroids, infrared emissions from the moon and the solar wind. Naturally, because Luna 10 was a Soviet spacecraft, and because 1966 was right in the middle of the Space Race and Cold War, propaganda was an important component of the mission. The plan was to play "Internationale," a popular socialist anthem with lyrics in many languages (the Russian version includes the lines, "You have sucked enough of our blood, you vampires,/ With prison, taxes and poverty!") on April 4 over loudspeakers for the 5,000 delegates of the Communist Party Congress, live from Luna 10 orbiting the moon. It would be an inspirational moment that would make any Soviet stand tall and proud. But, as the world found out 30 years later, mission controllers decided to play a recording of "Internationale" made from an April 3 Luna 10 transmission and pass it off as a live broadcast. For one thing, Soviet officials didn't trust a live broadcast; for another, during a test transmission early April 4, they discovered that a note from the song was missing. Oh, well, what the delegates didn't know didn't hurt them, and they could still stand tall and proud.
Week 12: Everyone’s probably pretty familiar with Old Mother Hubbard who went to the cupboard to get her poor dog a bone… but have you ever heard of Mother Hubble? Her real name is Nancy Grace Roman and she’s known as the Mother of Hubble because it was her leadership that led to the building and launching of the Hubble Space Telescope. Roman was the first Chief of Astronomy in NASA's Office of Space Science — and the first woman to hold an executive position at the space agency. Why did astronomers want to put a telescope in space? In Roman’s own words: “Looking through the atmosphere is somewhat like looking through a piece of old, stained glass. The glass has defects in it, so the image is blurred from that.” Hubble Space Telescope was the first astronomical observatory to be placed into orbit around Earth with the ability to record images in wavelengths of light spanning from ultraviolet to near-infrared. Early on in the program, she was asked by a Senator why taxpayers should fund a space telescope. “My answer was that for the price of a night at the movies every taxpayer would receive 15 years of exciting scientific results." Actually, we’ve probably gotten all that and more. According to NASA: Hubble has made more than 1.2 million observations since its mission began in 1990 & astronomers using Hubble data have published more than 12,800 scientific papers, making it one of the most productive scientific instruments ever built. Not to put too fine a point on it, but the Hubble is credited with changing the face of astronomy and ushering in a new chapter of humanity’s exploration of the universe.
Week 13: If NASA wasn't triskaidekaphobic before the Apollo 13 mission, nobody could blame them if they had become so afterward. Triskaidekaphobia, by the way, is fear of the number 13, as in the 1946 Les Brown song of the same name ("I've got a funny quirk, and I always go berserk when I hear the certain number, 13").
If you were around in 1970 or saw the great Ron Howard movie Apollo 13, then you know that the Apollo 13 mission (shuttle pictured left upon takeoff) was what mission commander Jim Lovell called a "successful failure:" failure in that it didn't do what it was supposed to do (land on the moon), successful in that nobody died. So here are some Apollo 13 thirteens that would make Les Brown and other triskaidekaphobics go berserk:
- Obviously, the mission number - 13; the date of the launch, April 11, 1970, or 4-11-70 (add the individual digits: 4+1+1+7=13);
- Apollo 13's launch time was 1:13 p.m. Houston time, or 13:13 military time in Houston;
- Two days, seven hours, 55 minutes and 20 seconds into the mission, one of Apollo 13's oxygen tanks exploded, prompting command module pilot Jack Swigert to calmly remark, "OK, Houston, we've had a problem here," and prompting Houston to abort the mission (as any good triskaidekaphobic would point out, the date of the explosion was April 13).
After a series of brilliant solutions by Mission Control and the flight crew to a series of difficult problems, Apollo 13's command module splashed down in the Pacific Ocean on April 17. Flight director Gene Kranz said later: "I never considered 13 an unlucky mission. I don't think any of my controllers did. The crew certainly didn't. We have to eliminate any element of superstition. We deal in facts." Well, here's a fact from Triskaidekaphobia Central: It's a good thing April 13, 1970 (the day the O2 tank exploded), didn't fall on a Friday, or things might have gone really wrong. And now, back to Les Brown and his Band of Renown: "Triskaidekaphobia, I got triskaidekaphobia, and triskaidekaphobia has got me."
Week 14: Talk about an alignment of the stars (or shooting stars, if you will): The Lyrid meteor shower reaches its peak between midnight and dawn on Saturday, April 23, which happens to be the 500th anniversary of Shakespeare’s death. Of course, Shakespeare and his Renaissance buds knew about meteors, as evidenced by Richard II (“… meteors fright the fixed stars of heaven”). But they didn’t know that meteor showers occur when the Earth passes through a debris trail left by a comet, and bits of debris burn up in the atmosphere; instead, they thought meteors were vapors (exhalations) rising from the Earth and ignited by the sun, as evidenced by Henry IV, Part I (“My Lord, do you see these meteors?/ Do you behold these exhalations?”). And if we could bring Shakespeare back to life and explain meteor mechanics to him, he’d probably quote himself: “Oh, I am ignorance itself in this!” (Henry IV, Part 1). Lyrids, by the way, are debris from the periodic Comet C/1861 G1 Thatcher and have been observed for more than
In this 2012 NASA photo (right), astronaut Don Pettit (who was aboard the International Space Station) trained his video camera on Earthbelow.Footage from that night revealed breathtaking images of Earth at night with meteors ablating -- or burning up — in the atmosphere. The image shows a Lyrid in a six-second exposure, taken on April 22, 2012 at 5:34:22 UT. The International Space Station position was over 88.5 W, 19.9 N at an altitude of 392 km. NASA astronomer Bill Cooke mapped the meteor to the star field -- seen in this annotated image — and confirmed that the meteor originated from the Lyrid radiant. The image is rotated so that the north celestial pole (NCP) is roughly in the up direction. The lights of Florida are clearly visible to the right of the meteor. Cuba, the Florida Keys and the eastern Gulf Coast shoreline are also visible. Some brilliant flashes of lightning are also prevalent in the image.
Week 15: If you’re of a certain age, you probably associate the powdered orange drink Tang with space travel and are under the impression that NASA invented it. While Tang was included in the menu for John Glenn’s 1962 Mercury mission where he orbited the Earth and experimented with eating in space, NASA didn’t actually invent Tang; instead, it was invented by chemist (and part-time playwright) William A. Mitchell — who also invented Cool Whip and Pop Rocks — for General Foods in 1957. NASA decided to include Tang in its missions because the water that the life support systems produced had off-flavors that the astronauts disliked. That helped popularize the little-known orange drink for the general public. Glenn was also the first person to ever eat in the near-weightlessness of Earth orbit. His meal? Applesauce from an aluminum squeezy tube. Meal delivery has come a long way since then and today’s astronauts have a variety of foods to eat and no longer have to squeeze them from a tube.
Week 16: Later this month, the U.S. Postal Service will dedicate new stamps highlighting NASA’s Planetary Science program, including a do-over of the famous Pluto stamp that commemorated the NASA New Horizons’ historic 2015 flyby of the former planet. NASA and the New Horizons team originally placed the 29-cent “Pluto: Not Yet Explored” stamp issued in 1991 on board the spacecraft and it was inside the ship on July 14 when New Horizons made its historic flyby.
What else was aboard New Horizons? For one thing, Clyde Tombaugh’s ashes were there.
In 1927, Tombaugh was living in western Kansas when he built his own 9-inch Newtonian reflector telescope using discarded farm and car parts. He used this telescope to make drawings of Mars and Jupiter and in 1928 sent them off to the Lowell Observatory in Flagstaff, Ariz. The astronomers were so impressed with the pictures, they hired Tombaugh as an assistant and put him to work on the Planet X project, which was focused on searching for the planet predicted to exist by the Observatory’s founder, Percival Lowell. Lowell based his prediction of the object on small irregularities in the motion of Neptune. Tombaugh was 24 when he arrived at the Observatory ready to go to work taking images in and near the constellations — also the zone that the planets travel. By taking identical photos of regions of the sky two weeks apart, Tombaugh was able to compare them to see if any of the objects had changed position. It was using this technique that he was able to find the Planet X predicted by Lowell — he found Pluto.
When Tombaugh died in 1997 — nine years before the New Horizons 2006 launch — he requested that his ashes be sent to space. And they were: a small container with his remains was affixed to the New Horizons probe bearing the inscription: “Interred herein are remains of American Clyde W. Tombaugh, discoverer of Pluto and the solar system's 'third zone'”
When Tombaugh died, Pluto was still considered a planet and millions of schoolchildren used this mnemonic device to remember the planet names: My Very Excellent Mother Just Showed Us Nine Planets. Now that Pluto is considered a just dwarf planet, perhaps we need another mnemonic. How about: Maybe Visionaries Each Merrily Juggle Unknowns Naturally.
Week 17: It’s not too early to start planning for a big, big, big celestial event: The Aug. 21, 2017, total solar eclipse, which will be visible in 12 states: Oregon (beginning at 10:15 a.m.), Idaho, Wyoming, Nebraska, Kansas, Missouri, Illinois, Kentucky, Tennessee, North Carolina, South Carolina and Georgia. A total solar eclipse is visible somewhere on Earth about every 18 months, so what’s the big deal? You have to be in the right place at the right time to see one, and sometimes the right place is pretty inconvenient.
Our most recent total solar eclipse (March 9, 2016) was only visible in Indonesia, Micronesia and the Marshall Islands, and the next one after Aug. 21, 2017, will take place Feb. 15, 2018, and be visible only in Antarctica and southern South America.
Since 1900, seven total solar eclipses have been visible in the United States; the most recent was July 9, 1945, but totality was only visible in Idaho and Montana. The last time a solar eclipse occurred across the entire United States was June 8, 1918, beginning in Washington State and ending in Florida — among the Florida locations in the path of totality were Panama City Beach, Sopchoppy, Cedar Key, Orlando, and Cocoa Beach.
Unfortunately, the closest place you can see totality Aug. 21, 2017, is in extreme northeast Georgia, in places like Clayton, about 110 miles northeast of Atlanta, (where the eclipse begins at 2:35 p.m.), Toccoa and Black Mountain State Park.
Traditionally, total solar eclipses have been considered spooky events. According to Archdeacon Thomas of Split, Croatia, on June 3, 1239, “a wonderful and terrible eclipse of the Sun occurred. … And such great fear overtook everyone, that just like madmen they ran about to and fro, shrieking, thinking that the end of the world had come”; a Chinese observer wrote of an eclipse on Aug. 20, 1514: “The domestic animals were alarmed, and people were terrified”; even Shakespeare cashed in on the fear of eclipses: “These late eclipses of the sun and moon portent no good to us.”
These days, though, total solar eclipses are considered very cool, and people travel from all over the world to locations in the path of totality. And, with 12 states to choose from and a solar-eclipse invasion of the U.S. looming, now is the time to start planning for Aug. 21, 2017.
And don’t forget your eclipse glasses!
Week 18: Some very interesting space-race stuff happened in 1966, 50 years ago, as the United States and the Soviet Union were charging ahead to see who would be first to land a human on the moon. That year, NASA completed five manned Gemini missions (including Gemini 8, during which Neil Armstrong and David Scott accomplished history’s first docking in space, and Gemini 12, during which Buzz Aldrin set a record for extravehicular activity, totaling five hours, 30 minutes, on three different space walks), while the Soviets didn’t send anybody into space.
But what often goes unnoticed are both countries’ unmanned missions, whose goals were to collect data for future manned missions to the moon:
The Soviets led the year off on Jan. 31 with Luna 9, the first soft landing on the moon and the first transmissions of photographs from the moon’s surface
On March 31, the Soviets launched the lunar orbiter Luna 10, which studied the moon’s gravity and radiation.
NASA countered April 30 by launching Surveyor 1, which made history’s second soft landing on the moon. The spacecraft collected more than 11,000 images and was in operation until Jan. 7, 1967. Surveyor 1 also collected data on the moon’s surface and temperature.
On Aug. 10, the U.S. launched Lunar Orbiter 1, which transmitted 229 images covering 2 million square miles of the moon’s surface.
Soviet lunar orbiter Luna 11 was launched Aug. 24 to study the moon’s gravity and radiation.
Next came the year’s only oops-moment: U.S. spacecraft Surveyor 2 was launched Sept. 20 and was supposed to land on the moon, but one of its three thrusters failed to ignite, and it crashed into the moon on Sept. 23.
Luna 12 was launched Oct. 22 and photographed and surveyed the moon’s surface.
The last U.S. moon mission of 1966 was Lunar Orbiter 2, launched Nov. 6. The spacecraft sent back 626 images, including a frame of the Surveyor 1 landing site. It also collected data on micrometeoroids on the moon, radiation en route and near the moon and the moon’s gravitational field.
Closing out 1966, the Soviets launched Luna 13 on Dec. 21. The spacecraft landed on the moon Dec. 24 and transmitted panoramic photos of the lunar landscape.
Manned space missions tend to get the big headlines; after all, brave astronauts and cosmonauts are putting their lives on the line to explore the final frontier. But without unmanned spacecraft, and the ground-based nerds who design and control them, mankind would never have gotten beyond the pull of Earth’s gravity.
Week 19: The astronomy world is absolutely abuzz about NASA’s Kepler Space Telescope, which was launched March 7, 2009, and has been discovering exoplanets by the truckload (more than 2,000 so far). But have you ever wondered about the guy for whom the spacecraft was named?
That would be German astronomer and mathematician Johannes Kepler (1571-1630), whose many accomplishments include his three laws of planetary motion, the first of which states that planets travel in elliptical rather than circular orbits. And did you know that, in addition to a brilliant mathematical mind, Kepler had a very sharp legal mind?
You see, in 1615, a woman named Ursula Reinbold reported to the authorities of Leonberg, Germany, that Katherina Kepler, Kepler’s 68-year-old mother, had given her a potion (“eye of newt and toe of frog”?) that made her sick, and Katherina was arrested and tried as a witch (she was also accused of killing local animals, entering homes through closed doors, and turning herself into a cat). In 1620, Johannes Kepler took over his mother’s defense.
In her book The Astronomer and the Witch, Cambridge University professor Ulinka Rublack called Johannes Kepler’s arguments “a rhetorical masterpiece,” that appealed to “medical knowledge and common sense.” Katherina Kepler was released in the October 1621 and died six months later. Interestingly, in 1611, Jonannes Kepler wrote a sci-fi story called Somnium (The Dream), whose narrator’s mother is a witch who consults a demon to learn how to fly to the moon.
Week 20: The dwarf planet Haumea is a very interesting place, and not just because astronomers recently discovered that it doesn’t have what they expected it to have: The same kind of moons as Pluto.
Pluto and Haumea are considered “cousin planets” because astronomers thought they were both collisional families, meaning they were formed from impact events. But while Pluto has a large moon called Charon and four tiny moons (Nix, Styx, Hydra and Kerberos), Haumea only has two medium-size moons and is the “parent” of a large family of icy objects that used to be part of its surface and now orbit the sun on their own.
Here are some other neat facts about Haumea, which was discovered in December 2004: It spins incredibly fast (a Haumean day is 3.9 hours), which is probably why it’s elongated rather than spherical (it looks kind of like an alligator egg); it has a dark red spot, which might be higher concentrations of minerals and organic compounds than the rest of the icy white surface; it is named for the Hawaiian goddess of childbirth and fertility; its moons are named for two of Haumea’s daughters: the sea goddess Namaka and Hi’iaka, patron goddess of Hawaii, sorcery, medicine and — of course — hula dancers.
Week 21: Jim Collins from the Argonne National Laboratory recently reported some new progress in simulating what happens during a supernova explosion. Sean Couch, assistant professor of physics and astronomy at Michigan State University, is using Mira, the Argonne Leadership Computing Facility's 10-petaflops supercomputer, to carry out some of the largest and most detailed 3-D simulations ever performed of core-collapse supernovas.
Knowing what happens when supernovas explode is important because — as Carl Sagan said in his “Cosmos,” series — “we are made of star stuff.” That is, when supernovas explode, leaking elements like carbon, iron and all other natural elements across the universe, those elements in turn form new stars, solar systems and even provide the elements for life on Earth as we know it.
Supernova explosions happen when Titanic-sized stars run out of nuclear fuel and develop iron cores. Once that happens, they cannot support their own gravitational pull and begin to collapse. For some reason, though, instead of collapsing, the stars explode. “What theorists like me are trying to understand is that in-between step,” Couch told Collins. “How do we go from this collapsing iron core to an explosion?”
Couch is hoping that better and better 3-D models will help explain this transition and help us more fully understand supernova explosions — something humans have been trying to explain since at least 185 A.D., when Chinese astronomers documented a “guest star” that remained in the sky for eight months. This guest is believed to be the first recorded instance of a supernova explosion in human history, though some believe that indigenous cultures “recorded” previous supernova explosions in cave drawings.
This image shows the Chinese report of the guest star they identified in 185 A.D.
In 2011, NASA developed an image using four telescopes of what remains today of RCW 86, an exploded supernova recorded by Chinese astronomers in 185 A.D., located approximately 8,000 light years away. At about 85 light-years in diameter, it occupies a region of the sky in the southern constellation of Circinus that is slightly larger than the full moon. This image was compiled in October 2011. Credit: X-ray: NASA/CXC/SAO & ESA; Infared: NASA/JPL-Caltech/B. Williams (NCSU)
This visualization is a volume rendering of a massive star's radial velocity. In comparison to previous 1-D simulations, none of the structure seen here would be present. (Credit: Sean Couch, Michigan State University)
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