By the end of this year, NASA may have a new plan in place for returning samples from Mars. The agency announced in October that it had convened an outside panel of experts to review a dozen ...

Discovery of these 'UFO' galaxies 'tells us that maybe we didn't understand the universe as well as we thought,' according to ...

Like Earth, Saturn’s axis is tilted, NASA explains. Next year, Saturn will transition and its tilt will shift, altering our ...