While examining a region where new stars are forming with NASA's Spitzer Space Telescope, astronomers found a surprise — an object that looks like a giant tornado in space. The apparent tornado is shaped by a cosmic jet packing a powerful punch as it plows through clouds of interstellar gas and dust.
This is an image of the Black Widow Pulsar moving through our galaxy at one million kilometers per hour. That is its bow shock wave. It looks like the grim reaper to me and if it passed too close to us, it would be.
Carl Sagan's "Cosmos" television series was one of the best things I ever watched. Now nearly 30 years old it can still enthral and amaze me with its breadth and depth of history, science and knowledge. It had a profound effect on me when I first saw it that has continued to this day.