天王星の見事な環、ウェッブ望遠鏡の新画像
Stunning rings of Uranus in new images from Webb Telescope
Stunning rings of Uranus in new images from Webb Telescope
米航空宇宙局(NASA)のジェームズ・ウェッブ宇宙望遠鏡が、「巨大氷惑星」と呼ばれる天王星の新たな姿を捉えました
NASA’s James Webb Space Telescope has captured a new look at the ’icy giant’ Uranus.
NASA’s James Webb Space Telescope has captured a new look at the ’icy giant’ Uranus.
その見事な画像により、塵からなるぼんやりとした天王星の環(リング)がほぼ全て確認できます
The stunning image shows nearly all of Uranus’ faint rings of dust
The stunning image shows nearly all of Uranus’ faint rings of dust
NASAによれば、今回の画像にはウェッブ望遠鏡の感度の高さが表れています
According to NASA, this image shows the sensitivity of the Webb telescope.
According to NASA, this image shows the sensitivity of the Webb telescope.
より淡い複数の環については、これまで探査機「ボイジャー2号」と米ハワイ州マウナケア山の山頂に位置するケック天文台でしか捉えられていませんでした
The fainter rings have so far been seen only by the Voyager 2 spacecraft and the Keck Observatory, which sits atop Mauna Kea in Hawaii.
The fainter rings have so far been seen only by the Voyager 2 spacecraft and the Keck Observatory, which sits atop Mauna Kea in Hawaii.
天王星で存在の知られている環は13個です
Uranus has 13 known rings
Uranus has 13 known rings
ウェッブ望遠鏡の新たな画像では、このうち11個が確認できます
A new image from the Webb telescope shows 11 of them.
A new image from the Webb telescope shows 11 of them.
九つは主環に分類されますが、残る二つは塵状の性質のため捉えるのがより難しく、1986年のボイジャー2号のフライバイ(接近通過)によって初めて発見されました
Nine are classified as main rings, but the other two are more difficult to capture due to their dust-like nature and were first discovered by Voyager 2’s flyby in 1986.
Nine are classified as main rings, but the other two are more difficult to capture due to their dust-like nature and were first discovered by Voyager 2’s flyby in 1986.