A ring or circle of light around the sun or moon is called a halo by scientists.
Posts by EarthSky
Podcast and 2011 interview with Tom Niziol, a longtime meteorologist-in-charge of the National Weather Service in Buffalo, New York, about lake-effect snow.
Yearly, on or near November 20, the Pleiades cluster culminates – reaches its highest point in the sky – at midnight.
Is SDSS1133 a supermassive black hole ejected from its home galaxy, or the remains of a massive star that exploded as a supernova? Astronomers aren’t sure.
Rising temperatures could lead to a 50 percent increase in U.S. lightning strikes by the end of the century, says a new study.
City lights drown all but the brightest stars, planets, and fireballs. But there’s still some dark out there, as this satellite view of the U.S at night shows.
What’s the easiest way to find the Andromeda galaxy? Many use the constellation Cassiopeia, which is shaped like an M or W.
Scientists hope a thought-controlled implant might one day help combat neurological diseases, such as chronic headaches, back pain, and epilepsy.
Until about 10 years ago, it was pretty obvious what a comet was and what a comet wasn’t. Now, that’s changing …
A new analysis suggests that sunlight – not chemicals beneath Jupiter’s clouds – give the Great Red Spot its ruddy color.