Télescopes spatiaux

Vanishing Planet: GJ 3470b's Disappearing Atmosphere

Hubble observations show the Neptune-sized exoplanet GJ 3470b leaking a giant hydrogen cloud and shedding mass at a record rate. Astronomers say the planet may be on a long path t… Jan 19, 2026

Space

Roman Telescope Assembled — Next Step in Alien Hunt

NASA has finished assembling the Nancy Grace Roman Space Telescope at Goddard, advancing hardware and techniques that could reshape the hunt for habitable worlds and biosignatures… Déc 17, 2025

Space

Watch NASA Reveal Images of 3I/ATLAS

NASA will host a live briefing on Nov. 19, 2025 to release new images of the interstellar comet 3I/ATLAS. Here’s when to tune in, what instruments produced the pictures, and what … Nov 18, 2025

télescopes spatiaux

Articles about télescopes spatiaux

Vanishing Planet: GJ 3470b's Disappearing Atmosphere

Roman Telescope Assembled — Next Step in Alien Hunt

Watch NASA Reveal Images of 3I/ATLAS