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Habitable zone around stars might be larger than we think

Could life survive on a world whose orbit around a distant sun was extremely oblong and eccentric? Such a world would have periods of extreme heat and cold.

Deborah Byrd

January 7, 2013

NASA’s 3-minute solar cycle primer

NASA's solar cycle primer illuminates mysteries of the sun.

Editors of EarthSky

January 6, 2013

U.S. meteorologists gather in Austin today for annual meeting

Check out some of the awesome events that are occurring at the annual meeting of the American Meteorological Society, which starts today.

Matt Daniel

January 5, 2013

7.5-magnitude earthquake strikes southeast of Alaska

A local tsunami warning was issued and has now been withdrawn. No Pacific-wide tsunami warning. Hawaii might get strong and unusual ocean currents, but no destructive sea-level rise.

Deborah Byrd

January 5, 2013

Dinosaur shook tail feathers for mating show

Examination of fossilized dinosaur tail bones has led to a breakthrough finding: some feathered dinosaurs used tail plumage to attract mates.

Editors of EarthSky

January 4, 2013

Birds respond to birdsong much like humans do to music

Scientists have discovered that white-throated sparrows react to birdsong in a way that is similar to how our nervous system responds when we listen to music.

Deanna Conners

January 4, 2013

At least 100 billion planets populate our galaxy

Look up at the night sky and you'll see stars, sure. But you're also seeing planets—billions and billions of them. At least.

Editors of EarthSky

January 3, 2013

Shifts in food supply sparked our evolution

An environment that shifted between open grassland and closed woodland in East Africa roughly 2 million years ago may be responsible for driving human evolution.

Editors of EarthSky

January 2, 2013