Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets ...

Astronomers tracking the movements of Comet 41P/Tuttle-Giacobini-Kresak have found that it appears to have slowed its ...

Predicted to reach perihelion again in 2028, it will give astronomers a chance to get additional insights.

The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the ...

A fresh analysis of Comet 41P/Tuttle-Giacobini-Kresák observations suggests it abruptly reversed its spin after its last ...

First its rotation slowed between March and May 2017, taking 46 hours to complete a spin where it had once taken only 20 hours. This occurred as the comet neared its closest point to the sun, roughly ...

Comet C/2025 K1 (ATLAS) fragmented after its October 2025 solar approach, with telescope observations documenting multiple ...

The findings, detailed in papers posted on arXiv, mark a rare scientific achievement for an object that formed around a star ...

NASA’s SPHEREx mission observed infrared emissions from interstellar comet 3I/ATLAS, documenting changes in dust, gas, and ...

A famous comet visiting from outside our solar system known as 3I/ATLAS is blazing through our cosmic neighborhood, leaving a striking trail in its wake. A ground telescope in Chile recently glimpsed ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. On Friday, Oct. 17, 2025, Comet Lemmon will be visible both ...

Evidence from medieval chronicles suggests that the periodic nature of Halley’s Comet was recognized centuries earlier than previously believed.