These ten ghostly astronomical sights house some deep-and-frightening scientific truths within them.
With a huge suite of different observatories for viewing the Universe, innumerable details can be revealed.
Occasionally, what we find evokes terrifying feelings within us.
In the spirit of Halloween, here are the top 10 scariest sights the Universe has to offer.
10.) Terminator Tinkerbell: these three colliding galaxies, ESO 593-IG 008, look like a glowing monstrosity in space.
9.) Eye of Sauron Nebula: emitted by a dying red giant star, it peers at us from 10,000 light-years away.
8.) Halloween asteroid: officially named 2015 TB145, this 650-meter-wide asteroid will make a close pass by Earth in just a few weeks.
7.) Face on Mars: these eerie Martian rock formations look like faces in agony.
6.) X-ray skull: it’s just the Perseus galaxy cluster as seen in X-rays. How terrifying!
5.) Ghost Head Nebula: the “glowing eyes” 168,000 light-years away are produced by newly-formed massive stars.
4.) Crouching Gargoyle: allegedly, IRAS 05437+2502 is just a scary-looking cloud of interstellar gas.
3.) Skull Nebula: the fainter, central star is dying, responsible for the gaseous outline surrounding the glowing stars.
2.) Hand of God: pulsar winds create this phantasmal, gripping sight.
1.) Ghost Nebula: the dark nebula SH2–136 showcases demonic silhouettes against a glittering, stellar backdrop.
Mostly Mute Monday showcases a scientific story about the Universe in images, visuals, and no more than 200 words. Talk less; smile more.Ethan Siegel is the author of Beyond the Galaxy and Treknology. You can pre-order his third book, currently in development: the Encyclopaedia Cosmologica.