NASAのジェイムズ・ウェッブ宇宙望遠鏡を使用した天文学者らが、銀河を結ぶ暗黒物質とガスの広大なネットワークである「宇宙の網（コズミック・ウェブ）」のこれまでで最も詳細な地図を作成した。この地図は、宇宙誕生から約10億年後の構造を明らかにしている。
カリフォルニア大学リバーサイド校の研究者らが率いる国際チームは、COSMOS-Web観測の一環として16万4000個以上の銀河を分析した。学術誌「The Astrophysical Journal」に掲載されたこの研究結果は、ハッブル宇宙望遠鏡による同領域の初期の画像と比較して、フィラメント構造や空洞をはるかに詳細に示している。
Astronomers using the James Webb Space Telescope have identified the farthest jellyfish galaxy observed to date, located at a redshift of z=1.156. This galaxy, viewed as it appeared 8.5 billion years ago, features trailing streams of gas and young stars shaped by ram-pressure stripping in a dense cluster. The finding suggests that early universe galaxy clusters were more turbulent than previously thought.
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Astronomers using the James Webb Space Telescope have identified a massive galaxy that shows no rotation, formed less than 2 billion years after the Big Bang. The finding challenges existing models of galaxy evolution.
Astronomers have produced a detailed map of the Milky Way's magnetic field, revealing a surprising diagonal reversal in the Sagittarius Arm. The findings, based on new radio telescope data, help explain how this invisible force structures the galaxy. Led by scientists at the University of Calgary, the studies were published this month in The Astrophysical Journal.
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Astronomers have detected the brightest and most distant maser, a laser-like beam of microwaves, produced by colliding galaxies nearly 8 billion light years away. The discovery was made using the MeerKAT telescope in South Africa. This phenomenon, amplified by gravitational lensing, may represent a new category of extremely powerful masers.