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.