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What's the Universe made of?
Dec 14, 2005 What's the universe made of? Don't worry if you don't have a clue, Astronomers don't either. The universe is dominated by a mysterious Dark matter that seems to form the true mass of a galaxy, not the regular matter - like stars and planets - that we can actually see. Dr. James Jee from Johns Hopkins University used the Hubble Space Telescope to create a detailed map of Dark matter concentrations around two galaxies. And Astronomers just got some new clues.
Dec 14, 2005 In this Cassini image, Saturn's rings cast dark shadows across the face of the giant planet. The three bright arcs in the image are the three well-known gaps in Saturn's rings: the Cassini Division, the Encke Gap and the Keeler Gap. Cassini took this image on October 29, 2005 when it was 446,000 kilometers (277,000 miles) from Saturn.
Dec 14, 2005 JAXA engineers are working hard to recover their ailing Hayabusa spacecraft. The spacecraft has been out of contact since December 9th, after it turned suddenly from a fuel leak. Hayabusa was supposed to return to Earth in June 2007, but JAXA is concerned that it won't have enough fuel to make this date, so they'll probably push the return back to 2010. Unfortunately, they have no way of knowing if Hayabusa actually retrieved a sample from Itokawa during its close encounter.
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