Tag

Comet Fragmentation

All articles tagged with #comet fragmentation

Hubble Sees Comet ATLAS Split into Four Fragments
science18 days ago

Hubble Sees Comet ATLAS Split into Four Fragments

NASA/ESA’s Hubble Space Telescope captured comet C/2025 K1 (ATLAS) breaking into four fragments just after its perihelion, each surrounded by its own coma. The near-simultaneous breakup provides a rare, nearly pristine sample to study the comet’s composition and the physics of fragmentation and dust-layer formation, offering insights into how icy bodies evolve in the solar system. Observations were made in early November 2025 from about 250 million miles away, and scientists highlighted the serendipitous timing as a reminder that unexpected results can drive breakthrough science.

Hubble snapshots real-time breakup of distant comet C/2025 K1 ATLAS
space21 days ago

Hubble snapshots real-time breakup of distant comet C/2025 K1 ATLAS

NASA’s Hubble Space Telescope captured, in real time, the fragmentation of the long‑period comet C/2025 K1 (ATLAS) after its near‑Sun passage, identifying at least four fragments over three days (Nov. 8–10, 2025) with one fragment fragmenting again; breakup began about a week earlier as heating and stress from perihelion likely exposed dust layers. K1, ~8 km across and from the distant Oort Cloud, was discovered by ATLAS in May 2025. The observations, described in a 2026 Icarus paper, offer rare insight into the physics of comet surfaces and dust production during disintegration.

"Doomed Comet C2023 A3 May Shatter Before 2024 Sky Show"
astronomy1 year ago

"Doomed Comet C2023 A3 May Shatter Before 2024 Sky Show"

Comet Tsuchinshan-ATLAS (C/2023 A3) is showing signs of breaking up before its anticipated close pass to Earth this October, according to astronomer Zdenek Sekanina. Despite initial excitement about its visibility, the comet's lack of expected brightness and signs of advanced fragmentation suggest it will disintegrate into pieces too small to be seen from Earth.