With proper coaxing, molecules in microgravity can assemble themselves into forms with surprising properties. This new NASA ScienceCast video explores the possibilities
Even if carbon dioxide emissions came to a sudden halt, the carbon dioxide already in Earth's atmosphere could continue to warm our planet for hundreds of years, says a new study.
Get the facts about comet ISON. The manager of NASA's Near-Earth Object Program Office shares the low-down on the stellar object's holiday travel plans.
The appearance of this "new star" stunned those who thought the heavens were constant and unchanging. At its brightest, the supernova rivaled Venus before fading from sight a year later.