Posts by 

Deborah Byrd

Astronomers detect earliest hydrogen

They used a radio telescope to peer back to a time only 180 million years after Big Bang - when the 1st stars were turning on - to observe the earliest-yet signals of hydrogen gas.

Extragalactic supernova

At its discovery in January, this supernova was as bright as its whole galaxy! Now it's fading. Astrophotographer Brian Ottum caught it Sunday night.

Supermassive black hole and host galaxy not evolving together?

Astronomers assumed supermassive black holes and their host galaxies evolve together and affect each other. They call it "co-evolution." But it's not happening in the distant galaxy WISE1029.

This asteroid sweeps closer than our moon today

The average distance of the moon is 239,000 miles (385,000 km). Asteroid 2018 DU will sweep significantly closer than that on February 25, 2018.

See it! Friday night’s moon and star

People around the world last night caught the moon near the bright star Aldebaran in the constellation Taurus the Bull.

Amateur astronomer captures a supernova’s 1st light

Supernovae - exploding stars - are unpredictable. But an amateur astronomer in Argentina happened to catch one just as it began to explode. "It's like winning the cosmic lottery," one astronomer said.

X-men

The northern lights have been active this week for those at high northern latitudes.

Will you see the Humanity Star?

The debate surrounding the Humanity Star. Is it possible to see? Can you see it from your location? How to try to see it, if it's visible, here.

New Year greeting from Canis Major

Sirius, the sky's brightest star, is sometimes called the Dog Star because it's in the constellation Canis Major, the Greater Dog. In this Chinese Year of the Dog ... a photo from Hong Kong.

Return of the young moon, and Venus

Two lovely and hopeful signs in the sky ... the returning young moon and Venus. Photos here from the EarthSky community.