Friday, March 28, 2008
Behind the Pinwheel Galaxy, M-101.
Below is the tiny yellow dot at the end of the arrow:
The Pinwheel Galaxy is 27 million light years from Earth (a light year is 6 trillion miles). It is 170,000 light years in diameter and is found in the Big Dipper (Ursa Major). Note the ultra kool crown of young, blue stars in the upper right of the photo. The yellow galaxy in the lower photo is a galaxy as far from the Pinwheel Galaxy as the Pinwheel Galaxy is from us. That's far. It can still be named by you, if you pay me a dollar.
Here is a massive open cluster of young, blue stars in the outer fringes of the Pinwheel Galaxy. These stars are so bright and hot that they would frizzle the Earth into a cloud of plasma if they were where the Sun is to us.