Skywatchers gathered in Austin, Texas, this week at the 219th American Astronomical Society meeting. Here's a look at some of the most exciting interstellar space findings, and the images that accompany them.
By Jenny Marder
Perhaps you learned a mnemonic device such as the one above to help remember the planets -- Mercury, Venus, Earth, etc. -- and their order away from the sun. Turns out, we're going to need a longer mnemonic after the…
As NASA's space shuttle program comes to an end after decades of service, private companies are looking to fill the void. Judy Woodruff looks at the future of space exploration with science correspondent Miles O'Brien.
The deaths of some stars are marked by a unique event: the supernova. A NASA telescope captured a massive explosion in January, giving scientists clues into the mechanics of our own world. Robert Kirshner of Harvard University explains the significance…
Members of the International Astronomical Union voted in August to reclassify Pluto as a "dwarf planet." Many astronomers, however, are unhappy with the demotion -- they question its scientific validity and the way the decision was made.
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