Asteroid Diversity Points to a ‘Snow Globe’ Solar System

As of today, there are currently 1453 known potentially hazardous asteroids that could impact Earth and cause a real planetary catastrophe. Given the new diverse “snow globe” model of our solar system in relation to asteroids, how may more don’t we know about? It only takes one. Of more pragmatic interest, this new paper suggests…

AGU Fall meeting: The Chelyabinsk, Russia, meteor

The Russian Chelyabinsk Meteor was the largest since the 1908 Tunguska event. The airburst from the meteor on February 15, 2013, injured more than a thousand people and damaged thousands of buildings. It marks the first time scientists can study in detail such an event with a range of modern instruments as well as assess its effects…

A solar eclipse as seen from Mars

From NASA  JPL: NASA Mars Rover Views Eclipse of the Sun by Phobos PASADENA, Calif. – Images taken with a telephoto-lens camera on NASA’s Mars rover Curiosity catch the larger of Mars’ two moons, Phobos, passing directly in front of the sun — the sharpest images of a solar eclipse ever taken at Mars. Phobos…

A new understanding of the solar dynamo published

Our resident solar expert, Dr. Leif Svalgaard, sends word of this new discovery. Stanford solar scientists solve one of the sun’s mysteries The sun’s magnetic field can play havoc with communications technology. Stanford scientists have now described one of the underlying processes that help form the magnetic field, which could help scientists predict its behavior.…