Posts by 

Deborah Byrd

Most luminous galaxy in the universe

This galaxy is very distant. It shines with a luminosity of some 300 trillion suns. It's one of a new class of objects discovered via NASA's WISE mission.

Newly named dinosaur had a keen nose

It was a fierce predator, "not a dinosaur you'd want to mess with," said the scientist whose analysis of an ancient skull revealed a brand new species.

Video: Paddle boarders meet orcas

Imagine you're paddle-boarding, and an orca - killer whale - pops up on the ocean surface near you. Two amazing and beautiful videos, here.

See it! Best photos of moon, Venus, Jupiter

Photos from EarthSky community of the young moon, and bright planets Venus and Jupiter on these May evenings, 2015. Watch for them in the west!

LightSail launch success!

Sailing on sunbeams. LightSail successfully launched May 20 at 11:05am EDT (1505 UTC). Info on how to follow from here, below.

A balancing rock on Rosetta’s comet?

In close-up images via the orbiting Rosetta spacecraft, the rock looks poised like a ballerina, with only a tiny fraction of its surface touching the ground.

Origin of Antarctica’s eerie Blood Falls

New work confirms zones of liquid salt water hundreds of meters below the bright red waterfall in icy Antarctica, known as Blood Falls.

This date in science: Dramatic space photos of Pavlof Volcano

As Pavlof Volcano poured out lava and ash, ISS astronauts managed to capture these seldom-seen oblique views of the volcano.

Mountain shadow on clouds

Tenerife in the Canary Islands is one of the best places in the world to look up. Here's the shadow of Roque del Conde, a landmark mountain there, cast on clouds.

Watch a moon shadow on Jupiter

This composite represents an hour of Jupiter-watching. Watch a moon shadow on Jupiter's face, and see how far the Great Red Spot moves in that time.