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Posts by
Editors of EarthSky
Captive killer whales share personality traits with humans and chimps
Killer whales share some personality traits with humans and chimps - such as playfulness, independence, stubbornness, bravery, sensitivity and protectiveness - according to a new study.
November 18, 2018
Gaia spots enormous ghost galaxy on Milky Way’s outskirts
Gaia satellite data revealed the galaxy, which has avoided detection until now, thanks to its extremely low density and hiding place behind the shroud of the Milky Way’s disk.
November 16, 2018
Here are 6 reasons to study asteroids and comets
First, asteroids can serve as pit stops - and provide resources - for future space exploration. Second, some asteroids or comets may be hazards to Earth.
November 14, 2018
Synchronized telescopes put limits on mystery bursts
A technological tango between 2 telescopes in the Australian outback has added an important piece to the puzzle of fast radio bursts.
November 11, 2018
Astronomers find largest-yet galaxy proto-supercluster
Astronomers have identified a gigantic proto-supercluster of galaxies forming in the early universe, just 2.3 billion years after the Big Bang.
November 9, 2018
Galaxy-scale fountain seen in full glory
At the core of the giant elliptical galaxy Abell 2597, a supermassive black hole is powering the cosmic equivalent of a gargantuan, ongoing fountain.
November 9, 2018
Lucy mission to Jupiter’s Trojans gets the nod from NASA
There are perhaps as many Trojan asteroids orbiting 60 degrees ahead of and behind Jupiter as in the asteroid belt between Jupiter and Mars. Now NASA has given a go-ahead for the 1st mission to Jupiter's Trojans.
November 5, 2018
5 weird ocean phenomena
Strange things happen in the ocean as a result of weather and currents. These 5 events are just a few of them.
November 2, 2018
Cassiopeia to Andromeda galaxy
One half of the W of Cassiopeia is more deeply notched than the other half. This deeper V is your "arrow" in the sky, pointing to the Andromeda galaxy.
November 2, 2018
Ancient cold front in Perseus
Galactic cold fronts aren't like the cold fronts we experience on Earth. They're caused by galaxy clusters colliding into one another.
October 30, 2018
