Posts by 

Deborah Byrd

What’s the weather like on Proxima b?

The nearest known exoplanet - orbiting the star Proxima Centauri - is only 4.2 light-years away. Does it have liquid water? An atmosphere? Weather? Scientists just announced the first tentative steps to explore those possibilities.

The oldest signs of life on land yet

Fossils found in Australia - in ancient hot spring deposits - have pushed back the earliest known evidence for land-based microbial life to 3.48 billion years.

Circumzenithal arc over Surrey, England

Circumzenithal arcs look like upside-down rainbows, but they're caused by ice crystals, not rain. They're sometimes seen with sundogs, and even full halos around the sun or moon.

The Big Dipper’s deep sky

Many people recognize the Big Dipper in the northern sky. Here are 10 deep-sky Messier objects - 8 galaxies, a planetary nebula, and a double star - in and around the Big Dipper.

Got 5 minutes? Learn to see Saturn

June, July and August are especially good months for viewing Saturn in 2017. But you can find Saturn in May, 2017, too, especially when the moon sweeps past on May 11, 12 and 13.

Crossed contrails, with shadows

Striking contrail shadow image from the magical sunset skies of northern New Mexico.

Twilight dream

"Have you ever woken up from a dream and the view was still there?"

Video teaser: Noctilucent cloud season

Noctilucent clouds - aka night-shining clouds - can be seen at high latitudes in summer, typically beginning for northern latitudes in late May. French photographer Adrien Mauduit in Denmark assembled his best 2016 photos into a wondrous video.

See it! Last night’s moon and Jupiter

They were the brightest objects nearly all night Sunday night, as seen from around the world. Here are a few photos from the EarthSky community. Thanks to all who submitted!

The last of Hubble’s Frontier Fields

With a final observation of remote galaxy cluster Abell 370, the Hubble Space Telescope's mind-stretching Frontier Fields program came to an end.

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