Ninth test launch follows grounding of nearly two months Starship flew with re-used booster rocket for first time Musk had ...

A small team of planetary scientists, astrophysicists and space flight researchers affiliated with several institutions in ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...