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Posts by
Editors of EarthSky
A tetrad of lunar eclipses, next one October 8
Monday's eclipse marks the beginning of a special eclipse series known as a tetrad - four total lunar eclipses in a row, with no partial eclipses in between. The next one is October 8.
April 15, 2014
Is Saturn making a new moon?
A small icy object within the rings of Saturn might be a brand new moon in the process of being born.
April 15, 2014
Beauty from chaos on Mars
Catastrophic flooding is thought to have created the heavily eroded Osuga Valles on Mars ... and the features within it.
April 11, 2014
Star aligns with planetary nebula to create diamond ring
It looks like the diamond ring effect seen during total solar eclipses. It's really a distant, dying star and its shell of gas, with another star in front of it.
April 9, 2014
Astronomers make most precise measurement yet of expanding universe
A new analysis says that 10.8 billion years ago, the universe was expanding by one percent every 44 million years.
April 7, 2014
Ride along with a rocket to space
What a ride! Cameras mounted on the upper stage of a Soyuz rocket on April 3, 2014 looked earthward during a satellite launch.
April 7, 2014
Biggest galaxy cluster bigger than thought
El Gordo - the largest galaxy cluster in the universe - is about 3 million billion times more massive than our sun, roughly 43 percent more massive than earlier estimates.
April 4, 2014
Computer maps 21 distinct emotional expressions
... even seemingly contradictory ones, like "happily disgusted."
April 4, 2014
Hidden ocean discovered on Saturn’s moon Enceladus
A large ocean under Enceladus' icy surface supplies the water that's been seen spraying out of the "tiger stripes" on its surface, suggests new research.
April 3, 2014
Mercury has a long history of exploding volcanoes
Throughout extended periods of its history, the surface of planet Mercury crackled with volcanic explosions, a new analysis suggests.
April 3, 2014
