In 2009, astronomers predicted an unseen dark-matter-dominated dwarf galaxy orbiting our Milky Way - nicknamed Galaxy X. Now they say they've found it.
On Clyde Tombaugh's birthday, newly released images from New Horizons spacecraft showing Pluto and its largest moon, Charon. The craft is now on approach to Pluto!
Asteroid 2004 BL86 and its newly discovered moon passed only 745,000 miles (1.2 million km) from Earth last week. Did you see the still photos? Now see the movie ...
Who knew asteroids could have flowing water? They are so small, airless and cold that the idea seems surprising, to say the least. The latest evidence, here.
Discovered in 2010, two vast and mysterious Fermi bubbles radiate out from our Milky Way galaxy's core. An update from the three astrophysicists who found them.
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.