Posts by 

Deborah Byrd

Rare lunar halo – an odd-radius halo – over India

A common halo around the sun or moon has a radius of 22 degrees. It's called a 22-degree halo. But here's a rare lunar halo: an odd-radius halo.

New odds on asteroid Bennu. Will it strike Earth?

At a press conference August 11, 2021, planetary scientists released new odds on asteroid Bennu and its potential to strike Earth.

An all-sky red giant star symphony

The TESS planet-finder and Gaia space observatory have given us tickets to a red giant star symphony, now playing in our Milky Way galaxy.

The Mediterranean heatwave goes on

The Mediterranean heatwave is featuring land surface temperatures of over 50 C (122 F) and air temperatures in triple digits as well.

Parhelic circle and 2 halos over Alberta, Canada

Beautiful photo from an EarthSky community member showing showing portions of a 22-degree halo, circumscribed halo and parhelic circle.

Major 8.2-magnitude earthquake rocks Alaska

Sirens sounded across Alaska's Kodiak island last night, after an 8.2-magnitude earthquake prompted tsunami warmings.

Russia’s Nauka module en route to ISS

Russia's Nauka module reportedly had some issues after reaching orbiting. It's due to dock with the International Space Station on July 29.

Find Perseid and Delta Aquariid radiant points

Every late July and August, two excellent meteor showers overlap. Here's how to find the Perseid and Delta Aquariid radiant points.

Wildfire smoke blankets North American skies

Wildfire smoke from Canada and the western United States has blanketed North America this week. See photos and video.

1st images from rebooted Hubble telescope

NASA's rebooted Hubble Space Telescope was used successfully to capture images of oddball galaxies, following a return to normal science operations.