Chelyabinsk: a Blast From the Not-Too-Distant Past (or, How’s That Space Program Coming Along?)

Four years ago today an explosion shattered the morning sky over the Chelyabinsk region in southwestern Russia, the result of a 60-foot-wide fragment of an asteroid entering Earth’s atmosphere at over 40,000 mph and brilliantly blowing itself to smithereens at 97,000 feet up. Even at that altitude, the resulting flash of light and air blast was powerful…

We Still Don’t Know What Exploded Over Tunguska in 1908

This is an article, now updated, that I originally posted in 2009 during my first year of blogging. Since then more research has been done on the famous 1908 Tunguska Event and we even had a remarkably similar type of thing occur in February 2013 over the Chelyabinsk area, not too far from Tunguska, but…

Blast Zone

The Hubble Space Telescope trained its newly-installed Wide Field Camera 3 on Jupiter, capturing a photo of the recent impact scar made on July 19. This image is the first taken by the new camera installed in May, and while it’s still uncalibrated, details can be seen of the dark debris plume that has spread…

Tunguska Mystery Solved?

Inspired by a post on Universe Today by Nancy Atkinson: 1908 Tunguska Event Caused by Comet, New Research Reveals Long the subject of debate, with various theories ranging from meteorite impact to a comet to a flying saucer’s sudden engine meltdown, there’s actually strong evidence that the 1908 “Tunguska Event” was likely caused by the explosion of a…