Posts by 

Deborah Byrd

Saturn’s moon Titan has flooded canyons

They're steep-sided canyons with liquid in them, but the liquid isn't water. Instead, it's liquid hydrocarbons.

Humpback whales, heroes of the sea?

Humpback whales appear to rescue not just their own species, but also other whale species, seals and sea lions from attacks by killer whales.

Moon and Jupiter over Canary Islands

The moon, a planet and a very high volcano.

Shelf cloud over New Hampshire

Shelf clouds are what meteorologists call arcus clouds. They're low, mostly horizontal clouds, usually associated with a thunderstorm's leading edge.

Ice melt may release Cold War-era toxins

Formerly secret Camp Century in Greenland was abandoned beneath ice and snow. But the ice is melting, and biological, chemical and nuclear waste may be released as early as 2090.

First map of thawing under Greenland ice

Greenland's ice sheet insulates its own bottom layer, which is warmed from below by Earth's heat. Which bottom layers are now thawed, and which are still frozen?

Celebrating 100,000 orbits for ISS

Facts, links and photos here, with a word about ISS's history and purpose.

Photos of this week’s moon and planets

Many in the EarthSky community captured the moon and planets this week. From the sunset horizon up, they are Venus, Mercury and Jupiter!

Peer toward the mysterious center of the Milky Way tonight

On August 6, 2014, the moon shines by the Teapot asterism in the constellation Sagittarius. The Teapot lies in the general direction of the galactic center.

Venus, Mercury and the moon!

Two photos of this week's planet and moon spectacular, from a master sky photographer, from one of Earth's most pristine skies.