![]() ![]() SOFIA, the great infrared telescope mounted in a 747 aircraft, made its last flight on the night of September 30, 2022. I'm Mat Kaplan of The Planetary Society, with more of the human adventure across our solar system, and beyond. The End of SOFIA, this week on Planetary Radio. The crater created by the Deep Impact spacecraft on comet Tempel-1 is about 150 meters (490 feet) across, as measured during a later flyby by the Stardust/NExT spacecraft. What is the approximate diameter of the crater made by the Deep Impact spacecraft when it impacted comet Tempel-1? Use the estimate enabled by a later spacecraft that flew by. Question from the Septemspace trivia contest: What were the proposed names for the two spacecraft that would have been part of the European Space Agency’s Don Quixote mission had it gone forward? Be sure to include your name and mailing address. It features liner notes by Mat Kaplan.Ĭomplete the contest entry form at or write to us at no later than Wednesday, October 12 at 8am Pacific Time. ![]() (Abandoned Earth cities.)Ī CD album of the just-released “ The Moons Symphony,” available from Signum Classics. Name the solar system body and the category of geologic features on it that are officially named after abandoned cities.
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