Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets ...

NASA is recruiting volunteers for a year-long space simulation where they will undergo all the experiences associated with ...

NASA has chosen 41 commercial technology projects that could solve critical challenges for future missions to the Moon and ...

California-based company Auxilium Biotechnologies just produced kidney and liver tissue in space for the first time, using a ...