Posts by 

Deborah Byrd

Orion, the Bull, the Pleiades and a meteor

A long bright meteor, too, and on the night of the elusive Unicorn meteor shower ... but not a Unicorn meteor.

A better way to convert dog years to human years

Researchers collected DNA samples from 104 Labrador retrievers over a 16-year period. They compared changes in their DNA samples against DNA previously collected from humans. The result? A better sense of what a "dog year" really means.

Photos: This week’s moon, Jupiter, Venus, Saturn

What a week it's been for planets! Jupiter and Venus - the 2 brightest planets - were in conjunction last Sunday. Then the moon swept through the evening sky, passing Jupiter, Venus and Saturn. Thanks to all in the EarthSky Community who contributed photos! A sampling here ... Links to more in this post.

Epic cosmic explosion detected via faster-than-light particles

Space-based observatories detected a violent explosion in a galaxy billions of light-years away. It became the brightest source of high-energy cosmic gamma rays seen so far. Specialized Earth-based telescopes detected it via faster-than-light particles cascading through Earth's atmosphere.

Unicorn meteors proved elusive, after all

We've heard no reports so far today from anyone who saw a rich burst of meteors from the constellation of the Unicorn (Monoceros) last night. Looks like the meteor burst did not happen.

ESA studies human hibernation for space travel

In movies and books, fictional astronauts enter ‘suspended animation’ to cross the vastness of space. Recently ESA investigated how real-life crew hibernation would impact a space mission to Mars.

Composite image of SpaceX Starlink satellite swarm

SpaceX's Starlink satellite project will eventually place an initial 12,000 satellites in low-Earth orbit to provide worldwide internet access. This image is from the second batch of satellites launched November 11.

Ultima Thule renamed to avoid Nazi link

The distant Kuiper Belt object formerly known as 2014 MU69 - later known as Ultima Thule - has been renamed again. Its new name is Arrokoth.

Hubble captures a dozen galaxy doppelgangers

The distant galaxy in this image is nicknamed the Sunburst Arc. It's been lensed into multiple images by a massive, intervening galaxy cluster. A recent study revealed that the 4 bright arcs in this Hubble image contain 12 images - cosmic doppelgangers - of this very distant galaxy.

Astronomers catch a record-setting X-ray burst

The sudden spike of X-rays released as much energy in 20 seconds as our sun does in nearly 10 days. Turns out it was a massive thermonuclear flash on a pulsar, the crushed remains of a star that exploded as a supernova long ago.