Two early images from India's MOM spacecraft. One shows an edge of Mars, with the planet's tenuous atmosphere above. The other shows the whole planet. Beautiful!
Experts used “scenarios” to suggest global human population will stabilize around 9 billion by about 2050. A new statistical analysis tells a different story.
The nearby dwarf galaxy DDO 68 - only 39 million light-years away - looks young. But its nearness to us in space suggests it's not as young as it looks.
Moon was rising and setting with the sun in the past few days. Now it's far enough from the sun's glare to be visible in the evening sky, shortly after sunset.
The exoplanet HAT P-11b - about Neptune's size - has an atmosphere that's cloudless at high altitudes. That's how astronomers could identify water vapor there.
The Meadow fire in Yosemite National Park is still burning, but nearly 100 percent contained now. This video by QT Luong shows the beauty and terror of wildfire.
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.