For only the third known time, a space rock from the deep void is paying us a call ...

John Casani spent more than half a century turning speculative ideas about distant worlds into working spacecraft that could survive the trip. His quiet influence at NASA’s Jet Propulsion Laboratory ...

It takes light a single day to travel 16 billion miles. The Voyager 1 probe will need a little longer, just 49 years.

SAN FRANCISCO - NASA’s long-lived Voyager 1 spacecraft, which is heading out of the solar system, has reached a “magnetic highway” leading to interstellar space, scientists said on Monday. The probe, ...