As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a technosignature. Reading time 3 minutes From the moment astronomers discovered ...

Since the interstellar object (ISO) 3I/ATLAS was first discovered on July 1, 2025, it has garnered much attention, including speculation, hopes and fears that it may somehow contain evidence of ...

For our "What We Do" series and marking the end of 2025, we asked our three photo journalists to pick one of their favorite photos of the year and share information about the photo. Today we talk to ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown. When you purchase through links on our site, we may earn an affiliate ...

3I/ATLAS is only the third interstellar object ever observed traveling through the solar system, following 1I/'Oumuamua in 2017 and 2I/Borisov in 2019. Each encounter has sparked fascination—and ...

An alien comet, a Martian volcano, a man’s fall from the sun and a groundbreaking telescope’s first images: Here are the most jaw-dropping space photos of 2025. When you purchase through links on our ...

COMET 3I/ATLAS was approximately 169,150,000 miles away traveling at approximately 125,000 mph when I imaged it early morning 12/20/25 . It was one day past its closest point of approach to Earth.

Imagine that the Sun is on the verge of exploding. Or that a planet-killing asteroid is headed our way. Or maybe you just want to take the entire planet on a joy ride around the Universe. Well, fasten ...

Learn what to expect on your ride to the edge of space aboard Space Perspective's Spaceship Neptune capsule. CEO Jane Poynter explains what the high-altitude balloon ride is like. Credit: Space.com | ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...