No one has come out with a hypothesis that can explain the dark streaks without water, says the lead author of a new paper assessing images and observations from Mars. But no direct evidence of water has been found.
Scientists have discovered earliest human footprints outside Africa. Found on Norfolk Coast, these adult and juvenile prints were found at the Happisburgh site, an excavation site containing ancient flora and fauna.
Kepler-413b, a bizarre planet found by NASA's planet-hunting Kepler space telescope has erratic weather conditions and wobbles a lot. It has an orbit of precession that is about 10,000 times faster than that of the Earth.