ᴀsᴛʀᴏᴘʜʏsɪᴄɪsᴛ ᴇxᴘʟᴀɪɴᴇᴅ ᴛʜᴇ ᴄᴏᴍᴘʟᴇxɪᴛʏ ᴏғ ᴛʜᴇ sᴇᴀʀᴄʜ ғᴏʀ ᴇxᴛʀᴀᴛᴇʀʀᴇsᴛʀɪᴀʟ ᴄɪᴠɪʟɪᴢᴀᴛɪᴏɴs

Human civilization today does not have sufficient energy resources, as well as sensitive radio telescopes to detect the radiation of some devices on aRead More…