Video: The New Horizons team hold news conference after flyby declared a success

NASA is moving forward with a crucial test-firing of the core stage of the first Space Launch System heavy-lift rocket as soon as Jan. 17 after engineers were satisfied with the results of a fueling test last month.

Intermittent flows that appear on steep slopes on Mars are likely formed by flowing sand, and not water as some scientists previously suspected, according to a new study.

Replays from cameras at the Baikonur Cosmodrome capture the launch of a Soyuz booster from different angles.