Vesta is the 2nd-largest Asteroid in the well known asteroid belt between the orbits of Mars and Jupiter. 525 Km in diameter, it is very big for an asteroid. If it was much bigger we would call it a dwarf planet. The Dawn Spacecraft, launched in 2007, stopped by Vesta in 2011 and stuck with it until 2012 as it orbited the sun. We are still seeing the results of that rendezvous, and just recently NASA released a complete map of the surface features of Vesta. It’s amazing to see so many interesting surface features on such a small world. Geologic...
I like this picture – it gives good insight into just how much garbage is up there floating around in low Earth orbit. Space Junk has become a serious problem, and in the last few years has started to collide with satellites, creating more debris. Luckily, by 2018, Switzerland, with the help of Canada, will be launching a Space Junk Cleaner called CleanSpaceOne. Good on you Switzerland!
I’ve talked about black holes previously, and only in our own Galaxy, and only the big one in the middle, Sag A*. When I speak with the public and with kids about Black Holes, most people never really understand that there aren’t just one or two kicking around, but potentially there are as many as a Billion Black Holes in our own Galaxy! The problem is, we are not very good at finding them. It makes sense, they give off no light, and we can only find them through indirectly measuring their effects on the surrounding environment. We can sometimes see...
The Orion Spacecraft will eventually be the next vehicle to take humans further into space than ever before. But before it can do that, it requires extensive testing to ensure its ready to go! The short infographic below from the crew working on Orion gives us an idea of how the major December flight test will go, and the altitudes being tested. If you can’t see it, the axes are y (miles) vs. x (hours). Last short post of the week as my teaching conference STAO ends today!
I sometimes forget just how big things can be in the Universe. And I often forget just how small and insignificant we are in the grand scheme of things. Then I see a Galaxy like IC 1101 side by side with our own and I very quickly remember. About 350 Million light years from Earth IC 1101 is the largest galaxy in the known Universe in terms of actual size. If you didn’t notice the image above, it shows our own Milky Way Galaxy as a little tiny dot in the bottom left corner, and then Andromeda our closest neighbour,...
They did it! 10 Years in Orbit and 2 Billion dollars later, the landing is successful and confirmed. Now comes the fun part: The resulting Science!!! The first image that was beamed through 28 ad a half light minutes showed the lander on its descent, about 3km from the surface. The landing wasn’t perfect though. In fact it may have ‘landed twice.’ The 4km wide comet 67P/Churyumov-Gerasimenko doesn’t have enough gravity to keep the lander from flying out into space, which is why Philae was equipped with a harpoon system to lock it in place on the surface. Yesterday I...
For the first time in human history we are landing on a Comet! Watch the live feed and you can follow the landing as it’s happening. It is expected to touch down at about 11:03 EST. The lander, named Philae, already detached from the Rosetta Spacecraft at about 4am EST, and is slowly moving toward the landing site. Once it gets close enough it will launch harpoons (yup you read it right) to grab onto the comet and pull itself down to the surface, snapping photos along the way. The Science communication world has been following this story since the Orbiter arrived...
You need to see this animation. It’s an amazing picture showing the Hubble Ultra Deep Field and the small patch of sky Astronomers had to aim at in order to photograph it. The moon is there for comparison. The patch of sky is about the size of a grain of sand held at arm’s length. Courtesy of gfycat.com, it really puts things in perspective. The crazy part is that if you look in any direction in the universe, in patches of sky as small as this one, you see the exact same thing. There are more galaxies in the Universe than we...
Launched in December of 2013, the European Space Agency (ESA)’s GAIA Mission will be the next great mission to find exoplanets, planets orbiting stars other than our own Sun. However, GAIA’s main mission is not to search for planets, but to look at the motion, physical characteristics, and distance of up to one Billion stars with incredible precision. It’s a given that the satellite will invariably find planets by seeing the ‘wobble’ of a star due to the gravity of a planetary system. One of the strengths that GAIA posesses over other exoplanet studies is that it will search a...
It’s true, Mars just had what we call a Meteor Storm. This is an event that, on Earth, only happens once every few hundred years, and the one that Mars just had was more intense than anything Earth has experienced in recorded history. This event happened because of a close Martian fly-by of comet C/2013 A1 Sliding Spring. On October 19th around 2:30pm EDT the comet came within 140,000 Km of Mars. This is incredibly close in Astronomical terms, being less than half the distance to the Moon and comparable to the total distance I’ve driven my car in the...
