In 1974, astronomers sent a call out into the cosmos from a massive telescope in Puerto Rico. The anniversary of the message brings reflections on a new missive to the stars and grief for a lost ...

I assumed it was a very strange kind of cloud." It's not every day you get to watch a rocket launch into a sky glowing with ...

We're showing that, everywhere we look now, there was some sort of magnetic field that was responsible for bringing mass to ...

A sliver of Martian rock that once lay hidden in a university drawer has helped researchers better understand the Red ...

Exclusive photos reveal a sprawling, 300-year-old coral near Solomon Islands, recently discovered by the National Geographic ...