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EarthSky

For arid, Mars-like desert, rain brings death

When rains fell on the arid Atacama Desert, it was reasonable to expect floral blooms to follow. But a team of astrobiologists has found that the water brought death instead.

Does eating turkey make you sleepy?

“I’m sleepy because turkey is high in tryptophan.” True? Or myth?

Come to know the Pleiades, or 7 Sisters

At this time of year, for all of us around the globe, the Pleiades star cluster culminates – reaches its highest point in the sky – around midnight.

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.

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.

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.

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.

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.

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.

Why leaves change color in fall

The bright colors are wonderful to behold. But do they have some hidden purpose?