Asteroid 2017 AG13 unexpectedly whizzed by Earth on Monday. What is NASA doing to prepare?
SpaceX has an ambitious timeline, but a more cautious approach may be necessary, some observers say, given how much is at stake.
Two stars in the binary star system KIC 9832227 may collide sometime in 2022, creating a red nova that would be visible to the naked eye some 1,800 lightyears away.
The latest discovery could serve as evidence that Mars used to experience wetter conditions followed by drying periods.
A commercial race to the moon raises questions about extraterrestrial legal rights.
The company is hoping the planned launch will set the company's ambitious plans back on track after a devastating loss in September.
The Chandra X-Ray Observatory tuned its sensors to information from the early days of the universe, and found a cluster of black holes growing in spurts.
What will these small space rocks tell us about the origins of our solar system?
C/2016 U1 NEOWISE, at its brightest the first week of 2017, should be visible with a good pair of binoculars.
NASA announced Ellen Stofan's resignation in a blog post, but hasn't named a successor for the top science job in the agency.
A mission slated for 2020 might reveal more about a hard-to-study phenomenon.
The super-advanced telescope experienced a delay after unexpected readings were taken during a vibration test in December.
Scientists counted 222 new meteor impacts in seven years. The moon’s surface is changing considerably faster than previously thought, says a new study.