Posts by 

Deborah Byrd

Witnessing the birth of today’s stars

Dust shrouds the era of distant galaxies, in which most of today's stars were born 10 billion years ago. Astronomers used radio telescopes to pierce the dust.

Arc and 2 sundogs over Illinois

Halos like this one around the sun or moon are caused by ice crystal high in Earth's sky. Notice the upside-down rainbow-like arc above. It's called a circumzenithal arc.

Snow in the Sahara Desert

Snow in a place where summertime temperatures are high - though wintertime temps can drop to freezing - and where precipitation from the skies is rare.

Super fast spin for supergiant Betelgeuse

This famous red star is spinning some 150 times faster than expected. Astronomers think it swallowed a companion star just 100,000 years ago.

Bailey the unknown reindeer

Like dogs? Celebrate Christmas? Don't miss this classic video Christmas greeting from Bailey the unknown reindeer.

Solstice sun rolling down the hill

An 8-frame animation of the sun setting behind Tijuca Peak in Rio de Janeiro, Brazil, 10 hours after the Southern Hemisphere's summer solstice.

Setting sun apparition

"A couple of bright blobs of orange light appeared for one minute ... in almost the exact position where the sun usually sets for the few days around our summer solstice."

Cold Neptunes an exoplanet sweet spot?

As astronomers explore distance solar systems, what can they expect to find? A new study suggests likely Neptune-mass worlds in solar systems' icy outer realms.

Winter solstice at Stonehenge

Stonehenge is carefully aligned on a sight-line that points to the winter solstice sunset, but, this year as in most recent years, the revelry began before sunrise.

Scientists find jet stream in Earth’s core

ESA's Swarm satellites have discovered a jet stream in the liquid iron part of Earth’s core, nearly 2,000 miles (3000 km) below the surface.

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