On Tuesday, Scott J. Kelly is scheduled to return from the International Space Station, completing the longest stay in space for a NASA astronaut. (Photo: NASA)
In 1054 AD, Chinese astronomers were startled by the appearance of a new star, so bright it could be seen in broad daylight for several weeks. Today, the Crab Nebula is what's left of the supernova explosion they witnessed.
Human Body Elements
Today is the 25th anniversary of the Pale Blue Dot photograph
A lesson in perspective…
In a galaxy far, faaaarrr away...
Messier Monday: The First Extragalactic Globular, M54
Star attraction. 1 million in globular cluster.
I've had these musings myself sometimes! Especially about the sunrise being someone else's sunset =)