Few of these impacts are obvious today because Earth tends to erode meteorite craters over short periods of geologic time. The term astrobleme comes from two Greek roots meaning "star wound." One of the most studied astroblemes is Barringer Crater, a meteor crater in northern Arizona that ...
Carl Hergenrother (U Arizona) reported his broad-band photometry of P/LINEAR in CBET 3870. His analysis indicated a slow rotator (best fit ~21.86 hr) and a larger-than-expected nucleus (at least 2 km). He also suggested that the comet is only active within 1.4 AU from the Sun. There...
First, turn off the window lights and let your eyes get adapted to the dark. Second, don’t try to watch the sky through breaks between trees. You need a wide open swath of sky, any section of sky will do. Overhead is perfect. If your backyard suffers an obstructed view, good tried...
Visiting Meteor Crater, Arizona TodayMeteor Crateris a famous tourist attraction with a museum featuring displays about the history of the crater and asteroid impact science. Meteor Crater, AZ is also a wonderful laboratory for research by scientists who come from all over the world to study the ...
How big is Meteor Crater in Arizona? Has anyone ever been hit by a meteorite? What is at the bottom of Meteor Crater? Are asteroid impacts natural disasters? What is the most accepted explanation of the Tunguska event? Have any probes collided in the asteroid belt?
long journey that began eons ago in the asteroid belt, when an impact shattered a larger asteroid and sent its iron-rich core hurtling towards the Earth. Entering our atmosphere at over 26,800 miles per hour, it slammed into what is now Arizona’s Painted Desert in a cataclysmic explosion....
The small asteroid that broke up over the city of Chelyabinsk, Russia, on Feb. 15, 2013, was a reminder about the importance of monitoring small bodies in space that could pose a threat to Earth.
NeoBio, which won a gold honor at the 2025 Edison Awards, makes learning ‘unbelievably exciting,’ according to Michael Crow of Arizona State University. Elliott Davis Jr.April 24, 2025 Home Sales Fall 5.9% in March Uncertainty over the economy is also weighing on prospective...
Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find ou...
Meteor Crater near Winslow, ArizonaPhoto: Courtesy Meteor Crater It’s as deep as a 60-story building and as wide as 20 football fields. More than 2 million fans could watch games from the crater rim. But to really comprehend the vastness of Meteor Crater near Winslow, Ariz., it’s wort...