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主題: FOCAL (spacecraft) 作者: peter 於 2020-12-15 23:22:25 https://en.wikipedia.org/wiki/FOCAL_(spacecraft)
Fast Outgoing Cyclopean Astronomical Lens (FOCAL) is a proposed space telescope that would use the Sun as a gravity lens https://www.centauri-dreams.org/2006/08/18/the-focal-mission-to-the-suns-gravity-lens/ => solar gravity lens telescope https://familystar.org.tw/index.php?option=com_smf&Itemid=3&topic=27900.0 |