Previous research suggested that the asteroid triggered earthquakes, shock waves, intense heat, and choking clouds of dust
Scientists believe that a huge asteroid smashed into Earth 65 million years ago, wiping out the dinosaurs. But if that errant space rock was a whopper, it was a pipsqueak compared to an asteroid that scientists now say slammed into Earth 3.26 billion years ago.
Story continues below. Lowe and a colleague looked at rock formations in the Barberton greenstone belt, a large area in eastern
Potentially Dangerous Asteroids (Images) Russian Meteor Explosion - All You Need About Chelyabinsk's Surprise Space Rock
It isn't statistically probable that we will encounter a supervolcanic eruption within the next century (or even millennia). But it isn't statistically probable that an asteroid will hit us either, and that doesn't stop us from preparing for the worst.
Uncertainty in exactly how something happens does not translate into uncertainty that it is happening. There is no rational basis for denial of the reality, or the risks, of global warming. And there is no excuse for ignoring it.
The scientists focused on the Cat's Paw Nebula about 5,500 light-years from Earth in the constellation Scorpius. The nebula
The researchers noted that the asteroid strike would have vaporized huge amounts of rock high above Earth's atmosphere. When
Tuesday's hearing was called after an asteroid came within 17,100 miles of Earth (the moon is about 238,900 miles from Earth
Scientists think they know ow to how to deflect an asteroid headed directly for Earth, given enough lead time. Researchers
Today scientists are closely tracking 434 asteroids that are large enough and come close enough to the Earth to be of potential future concern, and while none of these pose any significant risk today, increased surveillance is required.
However, further work suggested the Chicxulub impact occurred either 300,000 years before or 180,000 years after the end
How close exactly? Just 17,200 miles above our planet's surface, according to NASA. That puts the 50-meter-wide space rock
Yeomans works with an international network of professional and amateur astronomers who find and monitor asteroids and comets
"But much sooner, a closer approach by a lesser-known asteroid is going to occur in the middle of next month when a 40-meter