The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

NASA's Jared Isaacman will lead a news conference today (June 30) to provide the latest update on the ambitious plan to build ...

Vanity Fair reports from the Capitol Hill conference, where members of a sprawling community of national security experts and ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

Today:Early fog in the far southwest clears quickly. Most areas stay dry with sunshine and variable cloud, though northern and northeastern regions may see isolated showers. Light winds overall, ...

According to most models of how the universe works, matter and antimatter should have completely annihilated each other after the Big Bang. Yet, here we are. Scientists Found a Cosmic Loophole that ...