NASA Panel Considers Three Options for Space Telescope Transition (SpaceRef)

天文

同じくハッブル延命について、より詳しいパネルの提言が SpaceRef の記事に出ている。こっちのほうが分かりやすいかな？ 現在のところの計画ではハッブルは2005年か2006年にサービスミッション（SM4）を受けて2010年まで寿命を延ばし、その後太平洋へ海洋投棄。そして今回のパネルの提言は以下の3つのシナリオ。

"1. Two additional Shuttle servicing missions, SM4 in about 2005 and SM5 in about 2010, in order to maximize the scientific productivity of the Hubble Space Telescope. The extended HST science program resulting from SM5 would only occur if the HST science was successful in a peer-reviewed competition with other new space astrophysics proposals."
"2. One Shuttle servicing mission, SM4, before the end of 2006, which would include replacement of HST gyros and installing improved instruments. In this scenario, the HST could be de-orbited, after science operations are no longer possible, by a propulsion device installed on the HST during SM4 or by an autonomous robotic system."
"3. If no Shuttle servicing missions are available, a robotic mission to install a propulsion module to bring the HST down in a controlled descent when science is no longer possible."

Spaceflight Now のほうにも一連の記事が出ている。