The Jupiter-bound spacecraft JUICE spotted the interstellar invader comet 3I/ATLAS spraying enough water into space to fill 70 swimming pools a day.
A rare long-period comet is here — here's how to find comet C/2025 R3 (PanSTARRS) before sunrise this April, with key dates, viewing tips and the best mornings to look.
A dramatic breakup near the sun erased hopes of a bright comet lighting up the evening sky this week.
Our solar system's famous "invader" might be as old as the Milky Way itself.
The unprecedented observations of comet 41P/Tuttle–Giacobini–Kresák show its rotation slowing, reversing and then speeding up, and jet-like outbursts of gas might be providing the push.
NASA's Hubble Space Telescope has captured a rare cosmic moment: a comet breaking apart in real time.
The interstellar comet 3I/ATLAS is unusually rich in alcohol — a chemical clue that could reveal how planets and icy bodies form around other stars.
A newly discovered comet is rapidly brightening and could become visible from Earth — if it survives an extreme close encounter with the sun on April 4.
By taking advantage of a maneuver that would see a spacecraft fire rocket engines while in the solar corona, that spacecraft’s velocity could receive a huge boost — enough to allow it to catch up with 3I/ATLAS, which is the fastest comet ever seen.
The fate of a comet that was predicted to pass close to Earth remains a mystery five years after its dramatic breakup in the inner solar system.
