This image shows an Einstein Ring

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The ring is caused by a near-perfect alignment of two galaxies with respect to Earth. One galaxy is 'lensing' the other galaxy's light.

Deborah Byrd

April 11, 2015

Life’s building blocks in infant star system

"From a life in the universe point of view, this is great news,” said a researcher.

Editors of EarthSky

April 10, 2015

Auroras over US and similar latitudes

A geomagnetic storm sparked a display of auroras on the night of April 9-10. Auroras sighted as far south as Colorado! The storm may intensify later today.

Deborah Byrd

April 10, 2015

NASA scientist: We’ll find signs of alien life by 2025

"We know where to look. We know how to look," said NASA chief scientist Ellen Stofan.

Eleanor Imster

April 9, 2015

On the Star Walk trail

Orion, the Hyades and the Pleiades along the Grossmugl Star Walk in Austria, only hours before the April 4 total lunar eclipse. See bright Venus on the right!

Eleanor Imster

April 9, 2015

20 RR Lyrae stars with companions

Previously, only one RR Lyrae star - of many thousands known - was found to orbit in a double star system. Now astronomers have upped the tally by 2000%!

Deborah Byrd

April 8, 2015

Game on! Teaching science with games

The average U.S. student has played roughly 10,000 hours of games by the end of high school - only a little less time than the hours spent in school.

EarthSky Voices

April 8, 2015

Bacteria key to ice worm survival

Living in ice is no easy feat, but ice worms make it work. Part of the secret to their survival on glaciers lies in a symbiosis between worm and bacteria.

EarthSky Voices

April 8, 2015

Saturn’s two-faced moon Iapetus

This isn't the day and night side of Iapetus. It's the day side, a nearly full-on view. The two sides of this moon of Saturn have very different brightnesses.

Andrew R. Brown

April 8, 2015