Video of the pulsar at the heart of the Crab Nebula. Composite from images taken over the course of a year. Note the lightyears long puff of ‘smoke’. 
1.6 x mass of our sun, rotating 30x / sec, moving at 7million kps at the equator!
Tag: space
A Four Planet System, Directly Imaged and Remarkable
This is truly remarkable! A four planet system, directly imaged with the Keck Observatory in Hawaii.
“This evocative movie of four planets more massive than Jupiter
orbiting the young star HR 8799 is a composite of sorts, including
images taken over seven years at the W.M. Keck observatory in Hawaii.”
“The movie clearly doesn’t show full orbits, which will take many
more years to collect. The closest-in planet circles the star in around
40 years; the furthest takes more than 400 years.”
Link to full NASA Paper:
https://astrobiology.nasa.gov/news/a-four-planet-system-in-orbit-directly-imaged-and-remarkable/
Link to video of a Four Planet System:
http://i.imgur.com/BVXrHQM.gifv
My #top100 #scifi Num:46 Caves of Steel
Amazon: http://amzn.to/2fYSH7K 
Life is cheap on Earth. Overpopulation and fear of attack have forced the population down into subterranean megacities. Elijah Baile and R. Daneel Olivaw (R for Robot) are dispatched to solve the murder of a ‘Spacer’, a person not from Earth, but one the pampered, Elite, K-Selected humans who moved beyond the Solar System with their legions of Robot man servants. Like Monty Python’s British officers, Spacers shouldn’t die. It is simply politically unacceptable.
Continuing the run of Asimov, this is another of his Science Fiction classics, ostensibly a story of robots and spaceships, but with a payload of prejudice and privilege tucked inside.