But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

A telescope in Chile recently glimpsed 3I/ATLAS' glowing tail, which observations reveal has grown as the interstellar object ...

The images of Comet 3I/ATLAS were captured by the Gemini South telescope at Cerro Pachón in Chile on Aug. 27 as the icy ...

Strange interstellar object hurtling towards Earth has now grown a tail, astronomers say - Comet travelling on an orbit that ...

"We were excited to see the growth of the tail, suggesting a change in the particles from the previous Gemini images." ...

Astronomers and students teamed up to capture a stunning new image of interstellar Comet 3I/ATLAS, showcasing its growing ...

We have known for a while that asteroid 3200 Phaethon acts like a comet. It brightens and forms a tail when it’s near the Sun, and it is the source of the annual Geminid meteor shower, even though ...

Mercury's comet-like tail is made predominantly of sodium ions. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Mercury has been spotted ...

The newly discovered comet SWAN25B (C/2025 B1) made its first appearance in early September 2025, and although it hasn’t been officially confirmed yet, it’s already turning heads for its brightness ...

Scientists thought asteroid Phaethon, which is the source of the Geminid meteor shower, was shedding dust to form a comet-like tail, but NASA solar observatories show the tail isn't dusty. A weird ...

This illustration depicts asteroid Phaethon being heated by the Sun. The asteroid’s surface gets so hot that sodium inside Phaethon’s rock likely vaporizes and vents into space, causing it to brighten ...