NASA glaciologist Jay Zwally talked to EarthSky about melting in a large glacier at the western edge of Greenland. Read more on Greenland's melting glaciers.
Two asteroids - in unrelated orbits - will pass within moon's distance on September 8. They were discovered on September 5. Neither will strike Earth, scientists say.
Worst case scenario for the BP oil spill is yet unknown. One researcher compared the situation to "a war where the enemy shifts its points of attack daily."
A supermassive black hole - with a mass of perhaps a billion suns - could be ejected from its galaxy under special conditions when two black holes merge.
Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.