Posts by 

Deborah Byrd

Orion from the Southern Hemisphere

See the 3 stars of Orion's Belt in the upper right of this photo? The large, reddish cloud-like region on the lower left is the Gum Nebula.

Another Planet 9 search! You can help

This one will use images of the sky visible from Earth's Southern Hemisphere. You can help from anyplace on the globe. The search is for a 9th major planet in our system, nicknamed Planet 9.

Colors of scintillating Venus

Venus reaches inferior conjunction today, officially leaving the evening sky. It has been low in the sky, where Earth's atmosphere has caused Venus to scintillate, or twinkle, in many colors.

New map of space dust in 3-D

Sure, we're all collections of space dust. But astronomers also want to study it in order to understand how space dust in our Milky Way obscures starlight from afar.

Perfect airplane glory

You might catch an airplane glory when a mist or cloud lies below you, with the sun shining upon it.

Record low sea ice at both poles

Considering both poles in February 2017, Earth essentially lost the equivalent of a chunk of sea ice larger than Mexico, in contrast to the average global minimum for 1981-2010.

Does Mars sometimes have rings?

It's possible that Mars' closer moon - Phobos - might alternate between becoming a planetary ring and clumping together to form a moon.

Green flash at sunset

It's easiest to see a green flash with optical aid, but you have to be very careful not to look too soon, or you'll dazzle - or damage - your eyes.

Last sunset of winter sun pillar

Photographer Josh Blash caught this sun pillar last night in Hampton, New Hampshire. It's caused by ice crystals drifting in the air.

Fizzy lakes for Saturn’s moon Titan?

Bright features - informally known as "magic islands" - seem to appear and disappear in a Titan sea. A new study shows that bubbles could, potentially, be the cause.