A study led by the Harvard & Smithsonian Center for Astrophysics reveals that more than 75% of the baryonic matter in the ...

Out where the Sun shrinks to a bright pin, Voyager 1 is getting a cosmic suntan. Nearly 24 billion kilometers from Florida’s ...

Just 500 light years away, the Chamaeleon Complex, and in particular its dark cloud Chamaeleon I, is a hotbed of young, ...

Will Smith passed on a major Christopher Nolan film that became a modern sci-fi classic — and it wasn’t Interstellar! Find out why he walked away from the role.

This serene spiral galaxy hides a cataclysmic past. The galaxy IC 758, shown in this NASA/ESA Hubble Space Telescope image, ...

Former NASA agent Joseph Gutheinz dismisses UFO sightings as alien visits, citing vast interstellar distances. He suggests ...

Former NASA official Joseph Gutheinz dismisses the notion of alien visitors, urging people to focus on scientific evidence ...

Retired NASA agent Joseph Gutheinz dismisses UFO claims, noting interstellar travel would take 70,000 years and suggesting ...

Mel Brooks, in his own signature brand of humor, recounts the hoopla surrounding Spaceballs' answer to Falcon, the Winnebago ...

Astrophotographer Greg Meyer captured stunning images of the Trifid and Lagoon nebulas under Arizona's dark skies ...

To reach Earth’s closest star system, Alpha Centauri, scientists are building a laser-powered spacecraft. To pull off interstellar travel, a spacecraft must be very light; therefore, it’s essential to ...