The Voyager 1 spacecraft started sending gibberish back to Earth in November. Now engineers have sent it a "poke" and received a message they can decipher.
Activity on the sun affects Earth's magnetic field. It can cause geomagnetic storms and can create beautiful auroras. Are these solar storms dangerous?
A newly found giant volcano on Mars erupted in "modern times" and could erupt again. It's the site of glacier ice, with implications for life and exploration.
Researchers at Cornell University say that scientists can determine the water temperature of ocean moons by measuring the thickness of their ice shells.
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.