Samy for Brands
image: Hydrogen in M51 by thehubblescope

Hydrogen in M51

”I will not leave you comfortless: I will come to you.” . Perhaps the original spiral nebula, M51 is a large galaxy, over 60,000 light-years across, with a readily apparent spiral structure. Also cataloged as NGC 5194, M51 is a part of a well-known interacting galaxy pair, its spiral arms and dust lanes clearly sweeping in front of companion galaxy NGC 5195 (top). This dramatically processed color composite combines M51 image data from the Calar Alto Observatory's 1.2 meter...