New analysis of seismic waves recorded around the time the 2014 interstellar meteor hit Earth shows it was not an interstellar signal but a nearby truck.
Europa has enough oxygen to support 1 million people a day, but that's less than once thought. This could have implications for habitability in Europa's ocean.
NASA released images of the message to Europa that will be on the Europa Clipper. It contains a microchip with over 2.6 million names submitted by the public.
Astronomers have discovered a metal scar on a cannibal star, a white dwarf or "dead" star. They believe it formed when the star consumed one of its planets.
Researchers at Yale University said habitable planets in binary star systems - so-called Tatooine exoplanets - may be more common than previously thought.
New moons for Uranus and Neptune! They're the faintest found so far using Earth-based telescopes. Scientists think they are fragments of larger bodies.