If an antimatter meteor came into our solar system, we’d definitely know about it, says one reader, especially if it hit the ...

Modern astronomy is giving us unprecedented views of the asteroids, comets, and other small bodies that litter our cosmic ...

Astronomers confirm that 3I/Atlas is still intact, despite viral posts claiming it was destroyed near the Sun.

The comet – named 3I/ ATLAS – was discovered this summer and led to excitement because it appears to be an interstellar comet ...

A rare interstellar visitor, comet 3I/ATLAS, is currently traversing our solar system, offering scientists a unique chance to ...

The interstellar object 3I/ATLAS, which recently drew attention for its supposed color shift during its close pass by the Sun ...

Researchers rarely get a glimpse of an interstellar object up close like 3I-ATLAS, so they have jumped on the opportunity to learn about its composition, which can reveal how planet systems are made.

Planetary scientist Adeene Denton runs computer simulations to investigate Pluto, the moons of Saturn and other icy bodies in the solar system.

Why did 3I/ATLAS interstellar comet turn green and hide tail? New telescope images reveal the reasons behind its glowing ...