NASA astronaut returns from year in space

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NASA's Scott Kelly and cosmonauts Sergey Volkov and Mikhail Kornienko landed safely in Kazakhstan on March 2. The landing wraps up Kelly's one-year mission aboard the ISS.

Eleanor Imster

March 2, 2016

Bacteria from Sahara on Swiss glaciers

Bacteria living among dust particles from the African Sahara Desert have been found trapped in ice and snow high on the Swiss Alps.

EarthSky Voices

March 2, 2016

False positives in search for living worlds

As the search for habitable exoworlds heats up, scientists will want to know: Is it life, or merely the illusion of life?

Deborah Byrd

March 2, 2016

Fair weather flights over Zimbabwe

Setting sun with glimpses of fair weather flight in front of it, including circling swallows and a light airplane.

Peter Lowenstein

March 2, 2016

Why space bodies come in different sizes

Objects in space aren't the same size, but why not? A scientist used a theory he formulated earlier - to explain patterns in nature on Earth - to suggest a reason.

Deborah Byrd

March 1, 2016

Biggest ever US methane leak from California blowout

The Aliso Canyon leak, finally plugged on February 11, vented 100,000 tons of methane into the atmosphere - a climate impact equivalent to the annual emissions of half a million cars, say scientists.

Eleanor Imster

March 1, 2016

Cockroach egg impressions from 4,300 years ago

More information about early human settlements - and in this case the insects who lived alongside them - is being found in ancient bits of broken pottery.

Shireen Gonzaga

March 1, 2016

Moonrise over Arctic Ocean

A psychedelic moon rising over the Arctic Ocean, created by a strong temperature inversion.

Deborah Byrd

March 1, 2016

Two last quarter moons for March

There's typically just one each of the major moon phases each month. But March, 2016, has two last quarter moons. Will some label the second one "blue?"

Bruce McClure

March 1, 2016