ᴄᴏᴜʟᴅ ᴡᴇ ʜɪᴅᴇ ᴛʜᴇ ᴇᴀʀᴛʜ ғʀᴏᴍ ᴀʟɪᴇɴ ᴠɪsɪᴛᴏʀs?

What if it were possible to hide from a hostile a̳l̳i̳e̳n̳ civilization by ‘cloaking’ the entire planet? David Kipping – an assistant prRead More…