Lindley Johnson has been a pioneer in blueprinting warning and response scenarios to any potential impact of Earth by an ...

Skywatchers worldwide are in for a charming cosmic display before the Sun rises Friday, as three celestial bodies will appear in close conjunction. The arrangement of Venus, Saturn and a slender ...

When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...

NASA’s Psyche mission to a $10,000 quadrillion metal asteroid hit a snag with thrust loss, but backup systems offer hope to ...

Casey Dreier, the policy advocate for the Pasadena-based Planetary Society, says, “This is an extinction-level event for the Earth- and space-science communities, upending decades of work and ...

The predawn hours of April 28 will see a planetary triangle form in the night sky, as Venus makes a close approach to Saturn following a conjunction, while Neptune, invisible to the naked eye, will ...

A stellar occultation this month gave scientists an opportunity to scrutinize the seventh planet from the Sun.

A nuclear explosion might eventually be Earth’s only way to protect itself from a dangerous asteroid. But preparing for that ...

Super-Earths can exist in wider orbits around their parent stars than was previously believed, suggesting these Earth-like ...

When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an opportunity for NASA to improve its understanding of that planet's ...

There's always room for improvement ... It's an important capability, not just for planetary defense but applicability and importance to cislunar space domain awareness as well.