A $10 billion initiative called Breakthrough Starshot aims to send a centimeter-wide spacecraft to Proxima Centauri using ...

Research indicates airport radar systems may unintentionally broadcast Earth's presence to aliens up to 200 lightyears away, ...

During the height of the Space Race, space exploration occupied a much larger place in American culture and education.

Spica in Virgo is 250 light-years away, meaning its light left in 1776 — the year America was born. Here's how to find it and what it tells us about cosmic time.