SpaceX,
a commercial spacecraft company, will make history tomorrow if all goes as
planned. It will become the first private company to launch a commercially
designed and built spacecraft to dock with the International Space Station. Dragon
(a wonderful name with an even better logo, we think), should launch
tomorrow, May 19, at 4:55 a.m. EDT from Cape Canaveral, Florida. The mission
is primarily a safety test. NASA and SpaceX will both offer live coverage of the
launch.
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Read more from SpaceX.
Read the official Dragon press kit.
Read the original story
from SPACE.com.
Read
the Wetherbee Sky Watcher.
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Word from the Wetherbee
A weekly publication from the Wetherbee Planetarium at Thronateeska Heritage Center about all things astronomy.
Friday, May 18, 2012
Dragon takes flight tomorrow! 05.18.12
Friday, May 11, 2012
A Super Discovery, 05.11.12
NASA’s Spitzer Space
Telescope has made another monumental discovery: a “super-Earth.”
Twice as big as Earth, the
super-Earth is, for now, called 55 Cancri e, and is situated in the
constellation Cancer, about 41 light years away. For the first time, scientists
were able to actually measure the light emanating (reflected) from the planet itself,
instead of measuring how much light it blocks as it transits in front of its
star. Because of the low measurements that were taken, scientists guess that
the planet is probably very dark most of the time. It appears to be tidally
locked, though (one side is stuck facing its star), and that side appears to
have temperatures in excess of 3,000 Fahrenheit. Just so we’re clear on how hot
that is, most kinds of metal will be liquid at that temperature.
Based on their observations,
scientists are saying the planet most likely has a rocky core and is covered
with water. Because of the extreme heat on the sunny side, however, the water
is probably in a “supercritical” state, where it exists as both liquid and gas.
NASA claims the atmosphere is covered with steam. Regardless, the atmosphere
appears to be very thin, as it is doing such a poor job of blocking its sun’s
heat.
Based on all observations
made at this point, the planet cannot support life.
Read
more from NASA.Saturday, May 5, 2012
Hungry, Hungry Black Holes 05.05.12
A black hole has been caught with its hand in the cookie jar, so to speak. Researchers with the space-based Galaxy Evolution Explorer (GALEX) have discovered a black hole actually in the act of consuming a nearby star.
It all started out in such a normal way— no one ever suspected the black hole was capable of doing such a heinous thing, and then blam! All that remained was crumbs.
No, that’s not really how it started. In a way, the star itself is almost to blame for its demise. The victim is a star that appears to be going through a major life change, of a sort. The star appears to have been going through its red star phase, and was in the process of swelling to 100 times its original radius. The star only made it a third of the way out, however, before the nearby black hole’s tremendous gravity began stripping off some of the gasses from the edge of the star. Based on the spectrum of the gases, researchers say the star was mostly composed of helium. The researchers with GALEX have made this nifty little computer simulated representation to let us know sort of what it would look like: http:// www.space.com/15512-black- hole-devours-star-139-days- stellar-devastation-animated- video.html.
So, why is this important? Well, for once, researchers can watch a black hole in the act of “eating” something substantial. Black holes are completely invisible to us— we have no technology that is capable of seeing them— all we can see is the carnage they leave behind. By watching some poor star get sucked into one, though, we will have a much better understanding of how black holes function and “look.”
Read more from SPACE.com.
Friday, April 27, 2012
Help wanted: Moon Mappers
Have you ever wanted to make a contribution to astronomy, but felt helpless because you did not have any good equipment for deep space observation? Not to fear! Moon Mappers needs your help.
An initiative by Cosmo Quest, the project is to attempt to map out at least 1,000,000 craters on the surface of the moon before May 5th.
Credit: Moon Mappers |
Now, it may sound kind of silly to think of going about counting holes in the ground (even if it is on another world), but believe it or not, craters yield a lot of information when studied closely. More and more, scientists are discovering that craters are often sheltering harbors for ice and other frozen chemicals, which would otherwise melt and be evaporated if they were not hidden in shadow. Chemical samples from inside the craters also provide clues as to what sort of things have bombarded the moon in the past.
What’s more, Cosmo Quest has made it easy. They have managed to partner with NASA and obtain some high-resolution photos from the Lunar Reconnaissance Orbiter (LROC), so all you have to do it properly mark out craters that appear to be about 1 meter in diameter on the photos. Sound simple? “There are literally millions of craters at that size,” says Dr. Pamela Gray, who is leading the Cosmo Quest project. This is so much more than a preschool counting exercise.
So, who’s up for adding some “lunar cartography” volunteer experience to their résumé?
Read more at Universe Today or Cosmo Quest’s Moon Mappers Project.
Friday, April 20, 2012
Discovery headed to the Smithsonian, 04.20.12
Space Shuttle Discovery is on its way to the public eye at the Smithsonian. Earlier this week, the space shuttle was spotted hitching a ride to its new home on the back of a specialized 747 aircraft (pictured below).
Yesterday, April 19th, the Discovery "attended" a ceremony (pictured below) where it traded places with space shuttle Endeavour at the Smithsonian's Steven F. Udvar-Hazy Center. According to NASA, Discovery will soon be on display at the Smithsonian Institution's Air & Space Museum.
Image Credit: NASA/Smithsonian Institution/Harold Dorwin |
Image Credit: NASA/Smithsonian Institution/Carolyn Russo |
Friday, April 13, 2012
Good visibility for Lyrids 2012, 04.13.12
Did you ever sit at your
window as a child and marvel at “shooting stars” as they streaked across the
night sky? Those were actually meteors passing across Earth’s atmosphere.
Sometimes, Earth passes through fields of debris in space that cause regular, predicted
“showers” of meteors. In April, we have one such shower: the Lyrids.
(NASA/MSFC/Danielle Moser) |
Named after the constellation
Lyra, the harp (the meteors’ apparent radiant point, or origin), the meteor
shower is caused by detritus left in the wake of Comet C/1861 G1 Thatcher.
Comets have a nasty habit of leaving trails of dust and ice behind them as
they course through the sky. When Earth passes through the trails, the debris
scrapes across the top of our atmosphere, glowing with the energy from the
friction that is generated.
This year, the Lyrids meteor
shower will take place next Saturday evening, on the night of April 21-22. You
can expect to see meteors from about 11:00pm until 5:00am. The Lyrids are always
very predictable, averaging about 15 meteors per hour. Peak hours could
generate as many as 10-100 meteors per hour, though, according to NASA.
The moon will also be
cooperating with us this year to offer the best show possible. Luna will be in
her new phase around the 21st of April, so the skies will be much darker,
making it easier to spot the tiny, brief streaks of light.
Do not be worried about where
in the world you are at the time, either. As long as you are not surrounded by
bright city lights and light pollution, you should be able to see the shower
from anywhere in the world.
Read more at NASA.
Monday, April 9, 2012
Seeing the Invisible, 04.05.12
If you have ever paid a visit
to the Wetherbee Planetarium
here at Thronateeska Heritage Center, chances are you have heard a good
deal about our film, “Black Holes: The Other Side of Infinity.” In
the film, all manner of evidence is put forward about the existence of a black
hole in the center of our Milky Way Galaxy. The film describes research done at
the Keck Telescope in Hawai’i, where several stars have been recorded orbiting
in a very strange manner around...something...at the center of the Milky Way.
SPACE.com, today (04.05.12), published
more information detailing recent studies on this supposed supermassive black
hole at the center of the Milky Way. Telescopes have yet to reveal it. With the
technology we have now, we simply cannot see anything there. Plans are in the
works for bigger and better detection methods, but for now, the area known as
Sagittarius A* (pronounced Sagittarius A-Star) seems to be a great big empty
space of nothingness that somehow manages to make some stars orbit around it at
mind-blowing speeds of over 3,000 miles a second.
CREDIT: Alain R. | Wikimedia Commons |
Astronomers know that something
has to be there. Analysis shows that something packing more than 4 million
times the mass of our own sun is there, yet it still cannot be seen. It does
emit some radio waves, but aside from that, there is not much else to go on.
Much research remains to be done to know for sure about this monster at the
center of the Milky Way. One thing is certain: whatever it is, it is proving to
be one great big mathematical migraine.
Read more from SPACE.com.
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