数千個のかみのけ座銀河団の銀河
Thousands of Coma Cluster Galaxies
上の写真に写っているほとんどすべての天体は銀河です。写真に写っているかみのけ座銀河団は、数千もの銀河が密集した銀河団です。これらの銀河の多くは、私たちの天の川銀河と同じくらいの数の星を含んでいます。他のほとんどの銀河団と比べると近いとはいえ、かみのけ座銀河団からの光が地球に届くまでには何億年もかかります。実際、かみのけ座銀河団は非常に大きいため、光が片側から反対側まで届くだけでも数百万年もかかるのです！この写真は、電波からガンマ線まで、あらゆる波長で空のあらゆる部分を観測できる「仮想天文台」であるウェブサイト「Skyview」で作成されました。
原文（English）
Almost every object in the above photograph is a galaxy. The Coma Cluster of galaxies pictured is a dense cluster containing many thousands of galaxies. Many of these galaxies contain as many stars as our own Milky Way Galaxy. Although nearby when compared to most other clusters, light from the Coma Cluster still takes hundreds of millions of years to reach us. In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other! This picture was created at the WWW site Skyview, a "virtual observatory" where it is possible to view any part of the sky in wavelengths from radio to gamma-ray.
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© Royal
Observatory Edinburgh, Anglo-Australian Observatory, and AURA
Explanation:
Almost every object in the above photograph is a
galaxy. The Coma Cluster of galaxies pictured
is a dense cluster containing many thousands of
galaxies. Many of these
galaxies contain as many stars as our own
Milky Way Galaxy. Although nearby
when compared to most other clusters, light from the Coma Cluster
still takes hundreds of millions of years to reach us. In
fact, the Coma Cluster is so big it takes light millions of years just to
go from one side to the other! This picture was created at the WWW site
Skyview, a "virtual
observatory" where it is possible to view any part of
the sky in wavelengths from radio to gamma-ray.
Tomorrow's picture: The Large Cloud of Magellan
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