Oumuamua: Asteroid that flew past Earth could have been a spacecraft sailing past us, Harvard scientists suggest
"A more exotic scenario is that 'Oumuamua' may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization"
NASA’s Parker Solar Probe reaches closest to the Sun than any spacecraft ever (video)
The $1.5 billion mission will take humanity closer to the Sun than ever before
How gravity will make this new probe the fastest human-made object (VIDEO-PHOTOS)
What makes the probe so speedy?
