Thursday, January 31, 2019

Foam in the Cosmic Sea

Today's Astronomy Picture of the Day shows Sharpless 2-308, a bubble of gas some 60 light-years in diameter. Is that large? Yes, compared to, say, our own system. No, when compared to the galactic arm, the galaxy or all of space. One bit of foam in the cosmic sea.

No comments:

Post a Comment