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A spacecraft is set to launch and test technology | |
In 2005, Congress directed Nasa to discover and track 90% of near-Earth asteroids larger than 140m (460ft). No known asteroids in this category pose an immediate threat to Earth, but only an estimated 40% of those objects have actually been found. | |
ผู้ตั้งกระทู้ Alomerovic (Alomerovic-at-gmail-dot-com) :: วันที่ลงประกาศ 2021-11-23 15:22:11 |
Lampang Eye Foundation & Lampang School for the Blind |
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