Black holes, space travel and comet chases

ESA-Comet 67P on November-NAVCAM-colored

Comet 67P (tited blue) Credit@ESA/Rosetta/NAVCAM, CC BY-SA 3.0 IGO

Comet 67P (tited blue) Credit@ESA/Rosetta/NAVCAM, CC BY-SA 3.0 IGO