Research shows bacteria and other Earth microbes can survive on spacecraft.
Scientists say strange flash of light is likely a cosmic ray.
Finding makes the moon a likely candidate for extraterrestrial life in our solar system.
Bolden says ambitious plan to capture an asteroid is just another step towards landing humans on the Red Planet.
Astronomers stunned to find two icy rings around a non-planetary object.
Burgeoning astronomers can can help NASA track near Earth objects.
Astronomers have been watching the asteroid slowly break apart over the past year.
According to a recent study, scientist say planets in a solar system over 100 light years from Earth can sustain life.