Posts by 

Deborah Byrd

After sunup, look for the daytime moon

In the days after every full moon, look in a blue sky after sunrise for a daytime moon.

Why do quasars twinkle?

Is it just a coincidence that some twinkling quasars are close on the sky's dome to hot, bright stars? New research suggests a connection and an explanation for a 30-year-old mystery.

Expect colorful clouds from rocket launch

NASA sounding rocket to form blue-green and red clouds in space Thursday morning. Launch window opens 4:25 a.m. EDT (8:25 UTC). Backup launch day is June 30.

Saturday night’s extremely young moon

Photo and animation of an extremely young moon - only 18 hours past the new phase - setting over a hill last night, as seen from Rio de Janeiro, Brazil.

Sunset

No matter where you are on Earth, your northernmost sunsets of the year are happening around now.

Elon Musk’s Mars manifesto

What if the cost of going to Mars as a colonist were less than US $200,000, or about the median cost of a house in the U.S.? Would you go? Elon Musk thinks many would.

A ribbon of ammonia in Orion

Radio telescopes have detected a 50-light-year filament of star-forming gas, zigzagging its way through the northern portion of the Orion Molecular Cloud.

Saturn over New York City

Think you can't see stars or planets from the city? Check out these 2 photos of Saturn over New York.

Did our sun have a twin?

A new analysis suggests the likely answer is yes — though not an identical twin. And so did every other sunlike star.

Milky Way over the Everglades

Watch this video, showing Earth spinning under the sky of the southern Everglades in Florida.