Télescopes spatiaux

Moon spared: the 100-metre-wide object story

New Webb observations have ruled out a previously feared collision of asteroid 2024 YR4 with the Moon. Here’s what scientists found, what would have happened if it struck, and why… Mar 12, 2026

Space

Rocky Outlier: A Planet That Breaks the Rules

Researchers find planet that upends the textbook 'rocky-inside, gaseous-outside' view of planetary systems; new data on LHS 1903 point to late, inside‑out formation and force mode… Fév 22, 2026

Space

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

Moon spared: the 100-metre-wide object story

Rocky Outlier: A Planet That Breaks the Rules

Vanishing Planet: GJ 3470b's Disappearing Atmosphere

Roman Telescope Assembled — Next Step in Alien Hunt

Watch NASA Reveal Images of 3I/ATLAS