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Site title: Astronomy Magazine: Space News, Observing, Planets, Galaxies

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America’s second satellite, Vanguard 1, was launched into space on March 17, 1958. And though it only blasted off some six months after the Soviet’s Sputnik satellite, Vanguard 1 still remains in orbit — more than 60 years later. This makes it Earth’s longest-orbiting artificial satellite, as well as the oldest human-made object still in


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Looking for a sky event this week? Check out our full Sky This Week column.  March 16: Canis Minor the Little Dog The lovely open cluster M29 flies through the early-morning sky inside Cygnus the Swan. Around 5 A.M. local daylight time, M29 is some 35° high in the east. It’s easy to find, too, located just


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Damian Peach from Hampshire, U.K. The innermost of Jupiter’s major moons, Io, is seen here on March 3 crossing the giant planet’s disk (along with its shadow at center). Io’s hints at its status as the most volcanically active body in the solar system, wracked by tidal heating due to its proximity to Jupiter.

The post


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One of the longest-standing techniques in humanity’s search for life beyond Earth may be causing scientists to miss alien signals entirely, a new study finds. Since the very beginnings of the search for extraterrestrial intelligence (SETI), narrowband radio signals have been the focus of these searches. Narrowband radio signals are considered ideal technosignatures — signs


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Mission Highlight: Onward and Upward German launch startup Isar Aerospace is targeting Thursday, March 19, at 4:00 p.m. EDT for the second flight of its Spectrum launch vehicle from the company’s dedicated launch complex at Andøya Space in northern Norway. The mission, titled Onward and Upward, represents a return to flight nearly 12 months after


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