宇宙望遠鏡

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… 3月 12, 2026

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… 2月 22, 2026

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… 1月 19, 2026

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… 12月 17, 2025

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 … 11月 18, 2025