Saturday, February 23, 2019

Feb 23 - Top Stories This Week

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Happy weekend, friends of the Earth and sky! Please take some time to check out our once-yearly crowd-funding campaign. Click here to donate and learn more.

Stonehenge mystery solved?

Europe's ancient megaliths, including Stonehenge, might have stemmed from a single hunter-gatherer culture in what's now northwestern France. Read more.

Weird hexagonal dune field seen on Mars

NASA's Odyssey orbiter has revealed something strange on Mars: a large dune field shaped roughly like a hexagon. See the images.

NOAA announces the arrival of El Niño

This year's El Niño is likely to be weak, with little influence on weather through early spring, say NOAA forecasters. Read more.
More top stories
 

The ozone hole is recovering

Earth's atmosphere extends beyond moon

 

Tides, and the pull of the moon and sun

 

Quietly, Regulus ushers in springtime

 

A solar flare 10 billion times more powerful than sun's

 

Firefall at Yosemite National Park

 

See it! Photos of 2019's biggest supermoon

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How to see 5 bright planets

Here are the 5 bright planets, plus Earth, in their order outward from the sun. Their relative sizes are correct in this illustration, but - in real outer space - their relative distances are much more vast. Click in to learn to see these planets in our sky in late February and early March. Illustration via NASA.

Sunrise in Florida

Photo taken February 10 by Melanie Higgins in Sun City Center, Florida. Thanks, Melanie!
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