Astronomers have found evidence for the most distant rotationally supported disk galaxy ever detected
The explosion occurred in the Ophiuchus cluster
The new satellites are covered in a special coating that are intended to make them blend into the night sky
The brightness of the star changes over a period of 21 days
It was detected about 4,600 light-years from Earth by the Green Bank Telescope in West Virginia
Existing technology could be used to produce an infrared beam bright enough to be spotted by intelligent alien civilizations
"A more exotic scenario is that 'Oumuamua' may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization"