National Parks Week in the U.S. extends through this weekend, and admission is free at all 397 national parks. If you can't go, check out these cool photos.
Black roofs can be up to 30°C (54°F) hotter than brigiht roofs - those fitted to grow plants - or plain ordinary white roofs, according to scientists in New York.
Rocks in Australia contain sand-sized circles and particles, thought to be formerly molten droplets ejected into space when killer asteroids struck Earth.
West Antarctica loses ice to the sea even if a summer isn't warm enough to melt snow on top of the glaciers. The oceans do the work from below, a study shows.
The object's estimated mass was around 70 metric tons. It broke up over the Sierra Nevadas, after creating a loud boom and fireball, and even shaking some houses.
New NASA map depicts an early spring in eastern two-thirds of North America in March 2012, when temperatures approached 18 degrees Fahrenheit above normal.
The earthquake took place 26 miles NNE of Valparaiso and 112 kilometers (69 miles) NW of Santiago. No tsunami warning issued. No immediate reports of injuries.
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.