来自地球的信息
2020 May 3 A Message from Earth Image Credit: Frank Drake (UCSC) et al., Arecibo Observatory (Cornell U.); License: Arne Nord…
无线电波、大耳朵以及“哇！”讯号
2020 May 2 Radio, The Big Ear, and the Wow! Signal Image Credit & Copyright: Rick Scott Explanation: Since the early day…