Posts by 

Deborah Byrd

Astronomers probe a baby star’s mystery gas flows

They used the ALMA telescope to observe a slow outflow and a high speed jet from a newly forming star. These two streams appear misaligned and were apparently launched from different parts of the star-forming disk.

How Hubble and Gaia weighed the Milky Way

Scientists used the measured velocities of 44 globular star clusters to measure the mass of our home galaxy, the Milky Way.

Snow roller in New Hampshire

Have you ever heard of snow rollers? We hadn't either. They're like the snowballs people roll to make snowmen. But, instead of people, nature rolls them.

Virga and cloud shadows over Africa

Virga is rain that falls but doesn't reach the ground. It helped create this spectacular scene over Mutare, Zimbabwe, on March 5, 2019.

One of the last Iridium flares

Only a few of the original, sometimes-glinting Iridium satellites are still in low Earth orbit. They have 3 reflective panels that occasionally catch the sun and produce a visible flare lasting between 5 and 20 seconds.

Asteroids are harder to destroy than we thought

What if we learned an asteroid was headed toward Earth? How much energy does it take to destroy an asteroid and break it into pieces? More than we thought, it turns out.

North Star over New Mexico

Polaris - aka the North Star - is in the center of the great turning wheel of stars in this photo. It's the star around which the entire northern sky appears to turn.

See it! Photos of moon and morning planets

The moon has swept past the planets that are up shortly before sunup this week. The EarthSky community caught the early morning sky scenes.

The next big leap

SpaceX took a giant step this weekend with the successful launch of its Crew Dragon demo capsule, its first spacecraft designed to carry humans.

Touchdown marks on asteroid Ryugu

A new image from Japan's Hayabusa-2 spacecraft reveals a large, dark, irregular spot where the craft landed on asteroid Ryugu's surface last week.