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Dazzling northern and southern lights seen across Europe, North America, and Australia

James Peaty, 34, is said to have been questioned by police over verbal threats sent to swimmer

New images show that comet C/2025 K1 (ATLAS) has fragmented after passing its closest point to the sun, ahead of its close approach to Earth later this month. This is not the interstellar comet 3I/ATLAS.

Interstellar object 3I/ATLAS remarkably survived its close solar pass intact, yet its observed gas jets demand an impossibly large absorbing area, four times its seen size.

Astronomers confirm 3I/ATLAS' radio signal is natural, not alien, with MeerKAT data showing it matches typical cometary outgassing patterns.

Envision a time when hundreds of spacecraft are exploring the solar system and beyond. That’s the future that NASA’s ESCAPADE, or Escape and Plasma Acceleration and Dynamics Explorers, mission will help unleash: one where small, low-cost spacecraft enable researchers to learn rapidly, iterate, and advance technology and science.

Harvard astrophysicist Avi Loeb has intensified his call for NASA to release high-resolution images of the enigmatic interstellar object, 3I/ATLAS, captured 40 days ago by the Mars Reconnaissance Orbiter.

Astronomers have ruled out alien origins for interstellar visitor 3I/ATLAS, confirming it's a natural comet—not an extraterrestrial spacecraft—while revealing clues about its ancient birthplace beyond the solar system.

Parts of Earth's magnetic field work in reverse compared to what long-standing models predict, new research suggests.