Jupiter and Saturn fashion the Great Conjunction of 2020 when they pair up on December 21st, the winter solstice. That evening they'll be closest in nearly 400 years.
An object set to pass near Earth next month may in fact be a relic of the early Space Age.
NASA’s Osiris-REX successfully stowed its sample of Bennu's regolith, collected earlier this week. Images show a good haul.
The subtle effect of sunlight may turn the near-Earth asteroid Apophis toward Earth in 2068 . . . but chances for impact remain small.
NASA's Osiris-REX mission has successfully touched down on the asteroid Bennu to collect a sample of its surface for return to Earth.
NASA's Osiris-REX mission has found evidence of ancient water flows on the surface of asteroid Bennu.
New analysis of data from the European Space Agency's Mars Express orbiter strengthens the case for salty lakes underneath Mars's south polar cap.