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Posts by
Editors of EarthSky
Meet the Dog Stars
Dog Star Sirius is our sky's brightest star. Dog Star Procyon isn't as bright, but it's easy to spot. Say howdy to these 2 tonight!
December 6, 2017
What would Earth be like with no moon?
Earth without its moon would be a very different world indeed. No eclipses. Smaller tides. But the biggest change would be in the length of Earth's day.
December 3, 2017
A farewell to Saturn
Two days before it plunged into Saturn's atmosphere last September 15, the Cassini spacecraft returned this final, full mosaic image of the planet.
November 22, 2017
Asteroids photobomb distant galaxies
The Hubble Space Telescope captured nearby asteroids photobombing distant galaxies
November 4, 2017
Is telekinesis real?
A neuroscientist talks about the history of telekinesis and the complexity of the human brain.
November 1, 2017
How do human genes act in space?
"Looking at gene expression ... we really see an explosion, like fireworks taking off, as soon as the human body gets into space."
October 29, 2017
Find constellations of the zodiac
Today's sky chart shows the constellations of the zodiac that are up after nightfall on these October evenings.
October 13, 2017
Night sky from sea caves
Two images of the Milky Way, taken on the same night from sea caves along the California coastline, hundreds of miles apart.
September 29, 2017
Aging star blows off smoky bubble
A strikingly beautiful view of a delicate bubble of expelled material around the exotic red star U Antliae helps astronomers understand how stars evolve during the later stages of their life-cycles.
September 20, 2017
Goodbye, Cassini!
The Cassini spacecraft has become part of Saturn, the planet it studied so spectacularly and so long. Cassini's last images and final moments, here.
September 15, 2017
