Shining (star)light on the search for life

In the hunt for life on other worlds, astronomers scour over planets that are light-years away. They need ways to identify life from afar—but what counts as good evidence?

Ice Age human footprints discovered in Utah desert

Human footprints believed to date from the end of the last ice age have been discovered on the salt flats of the Air Force's Utah Testing and Training Range (UTTR) by Cornell researcher Thomas Urban in forthcoming research.

NASA rocket to survey the solar system's windshield

Eleven billion miles away—more than four times the distance from us to Pluto—lies the boundary of our solar system's magnetic bubble, the heliopause. Here the Sun's magnetic field, stretching through space like an invisible ...

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