Posts by 

Deborah Byrd

Deneb: How astronomers know how far away it is

The star Deneb - part of the Summer Triangle - is one of the most distant stars you can see with your eye alone. Why don't we know its distance precisely?

Video: Starlink satellite train passes over

A sky photographer captured the a train of Starlink satellites on May 16, 2022, two days after Spacex launched them on May 14, 2022.

Tonga volcano blasted winds to the edge of space

Just after the Tonga volcano erupted, hurricane winds and wild electric currents formed high above Earth, at the edge of space.

Arcturus, brightest star of the north

Arcturus is the brightest star north of the celestial equator. Near the handle of the Big Dipper, it's easy to find in spring in the Northern Hemisphere.

Lunar eclipse: 4 tips for watchers

A total lunar eclipse - a supermoon eclipse - is coming up on the night of May 15-16, 2022. Here are some tips for watching it.

Baily’s beads seen during a solar eclipse

May 15, 1836: Francis Baily, an English astronomer, saw light shining through lunar ridges during an eclipse of the sun. These are now known as Baily's beads.

Dust and high winds rip Midwest and Great Plains

Dust and high winds battered the U.S. Midwest and Great Plains during the day on Thursday. Yes, it was a derecho.

A total lunar eclipse looks red. Why?

The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere.

Darn! Comet C/2021 O3 PanSTARRS has disintegrated

Astronomers hoped comet C/2021 O3 (PanSTARRS) would get bright after its April 2022 sweep near the sun. Instead, it disintegrated.

1st American in space, 61 years ago

Alan Shepard became the 1st American in space on May 5, 1961. His suborbital flight took place just 3 weeks after the Soviet Union's Yuri Gagarin orbited Earth.