May 15, 1836: Francis Baily, an English astronomer, saw light shining through lunar ridges during an eclipse of the sun. These are now known as Baily's beads.
The Denali sled dog puppy cam is now live! Watch this year's recruits tumble and play in Alaska at the Denali Kennels. Read more about the sled dogs here.
Skylab was America's 1st space station. 3 crews lived and worked there for over 171 days, studying the sun and Earth and setting records for life in space.