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Posts by EarthSky

Earth from space in northern summer via NASA
Science Wire | Dec 21, 2014

Watching solstices and equinoxes from space

How sunlight falls on Earth’s surface during the solstices and equinoxes, as seen from geosynchronous orbit.

wisdom-new-egg-cp
Science Wire | Dec 20, 2014

Wisdom has a new egg!

Recent photos of Wisdom – the world’s oldest known, banded wild bird at an estimated age of 63 – with her newest egg. Go, Wisdom!

evergreen_tree_300
Science Wire | Dec 19, 2014

Why do most evergreen trees have a pyramid shape?

Those who admire the shape of a Christmas tree might like to know that its shape has evolved in response to wind, snow, and light.

Wilbur and Orville Wright.
This Date in Science | Dec 17, 2014

This date in science: Wright brothers’ first flight

Check out one of the world’s most famous early photos. It shows the Wright brothers and the first true airplane on December 17, 1903.

Photo credit: Mr. TinDC/Flickr
Science Wire | Dec 15, 2014

How birds get by without external ears

A new study looks at how birds localize sounds. It seems that their slightly oval-shaped head transforms sound waves in a similar way to external ears.

Parrots have a unique pattern of gene expression in their brains, creating a super-charged speech center that may give them the ability to quickly pick up “dialects” of parrot speech. Photo credit: Michael Whytle/Flickr
Science Wire | Dec 15, 2014

Genes link birdsong and human speech

Humans and vocal birds like parrots use essentially the same genes to speak.

Photo credit: Brigham Young University
Science Wire | Dec 15, 2014

Chickens and turkeys closer to dinos than other birds

Songbirds and other birds sprang from dinosaurs, too. But new work indicates that chickens and turkeys are genetically closest to their dino ancestors.

Image Credit: NASA
FAQs | Dec 12, 2014

How high up are meteors when they begin to glow?

Meteors begin to glow almost as soon as they hit Earth’s atmosphere, but tend to vaporize (burn up completely) at varying altitudes.

 
Tonight | Dec 12, 2014

Geminid meteors Friday and Saturday nights!

Saturday night until Sunday morning will probably present the peak night of the Geminid meteor shower. But Friday night to Saturday morning might be almost as good. If it’s clear tonight, don’t let your opportunity slip away.

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Tonight | Dec 10, 2014

EarthSky’s top 10 tips for meteor-watchers

You might see a lot or you might not see many, but if you stay in the house, you won’t see any.