人々はよく「急いでのんびり、憎悪
[PR]上記の広告は3ヶ月以上新規記事投稿のないブログに表示されています。新しい記事を書く事で広告が消えます。
@@@
Supernova could be the 'missing link' in planet formation, astronomers has said.
Researchers have spotted a vast cloud proving that 聽supernovae are capable of producing a substantial amount of the material from which planets like Earth can form.
They say it contains聽enough聽material for thousands of planets.
Scroll down for video聽
SOFIA data reveal warm dust (white) surviving inside a supernova remnant. The SNR Sgr A East cloud is traced in X-rays (blue). Radio emission (red) shows expanding shock waves colliding with surrounding interstellar clouds (green).
WHAT IS SOFIA?聽SOFIA is a heavily modified Boeing 747 Special Performance jetliner that carries a telescope with an effective diameter of 100 inches (2.5 meters) at altitudes of 39,000 to 45,000 feet (12 to 14 km).聽
SOFIA is a joint project of NASA and the German Aerospace Center. The aircraft observatory is based at NASA's Armstrong Flight Research Center facility in Palmdale, California.聽
'Our observations reveal a particular cloud produced by a supernova explosion 10,000 years ago contains enough dust to make 7,000 Earths,' said Ryan Lau of Cornell University in Ithaca, New York.
Using NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA), the team used SOFIA data to estimate the total mass of dust in the cloud from the intensity of its emission.聽
The research team, headed by Lau, used SOFIA's airborne telescope and the Faint Object InfraRed Camera for the SOFIA Telescope, FORCAST, to take detailed infrared images of an interstellar dust cloud known as Supernova Remnant Sagittarius A East, or SNR Sgr A East.
These findings are published in the March 19 online issue of Science magazine.聽
The investigation required measurements at long infrared wavelengths in order to peer through intervening interstellar clouds and detect the radiation emitted by the supernova dust.
カレンダー
カテゴリー
フリーエリア
最新CM
最新記事
プロフィール
ブログ内検索
最古記事
P R