Astronomers have catalogued more than five thousand planets orbiting distant stars, and a handful of them defy almost ...

Earth may already be broadcasting its presence to alien civilizations without realizing it. A new study shows that our deep-space transmissions, especially those aimed at Mars and interplanetary ...

In addition to shaping the interior of rocky planets, molten rock located deep within these planets may also contribute to the creation of a planet’s magnetic fields, which protect the entire planet ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers who discovered it using telescopes from NASA and the European Space Agency, ...

DARPA is at last ready to test fueling up satellites in faraway Earth orbits, to keep those machines working a little bit longer. DARPA's (Defense Advanced Research Projects Agency) long-delayed ...