What if we'd had Twitter on July 16, 1969, the day Apollo 11 launched carrying the first humans to the moon? NASA did a live-tweet reenactment today as if we had.
There's a supermoon this weekend, and many will tell you that you can't discern its extra large size with just your eye. Daniel Fischer in Königswinter, Germany says that's not true.
This Hubble Space Telescope image shows a chain of star clusters resembling a corkscrew-shaped string of pearls winding around the cores of the galaxies.