Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and probing mysteries of the Universe.

Most of us go through life assuming Earth’s place in the universe is secure. We picture our planet as a blue marble, peacefully orbiting the Sun in a cosmic dance that’s guaranteed to go on for ...

In a groundbreaking study,Harvard physicist Dr. Avi Loeb has brought new attention to an unusual interstellar object, 3I/ATLAS, discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) ...

Astronomers discovered 3I/ATLAS earlier this week, and recently confirmed that it is an interstellar object. © K Ly/Deep Random Survey Update: July 3, 09:24 a.m. ET ...

Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

"These objects really could be anywhere in the solar system at any given time." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. One million alien ...

Peering through a cosmic keyhole at distant baby star, astronomers may have opened a new window on the deep past of our own solar system. Weighing in at 0.6 solar mass, HOPS-315 should someday grow to ...