Probing Question: Are Asteroids a Threat to Earth?

Space & Earth / Space Exploration

Nov 12, 2007 | 3.5 / 5 (31) | 0

Hollywood thrillers such as Deep Impact helped to jump-start America's interest in knowing what our "deflection strategy" would be if a giant asteroid was on a potentially catastrophic collision course with ...

Dealing with threatening space rocks

Space & Earth / Space Exploration

Sep 20, 2007 | 4.5 / 5 (14) | 0

Every now and then a space rock hits the world's media – sometimes almost literally. Threatening asteroids that zoom past the Earth, fireballs in the sky seen by hundreds of people and mysterious craters which ...

Scientists solve mystery of Meteor Crater's missing melted rocks

Space & Earth /

Mar 09, 2005 | 4.3 / 5 (9) | 0

Scientists have discovered why there isn't much impact-melted rock at Meteor Crater in northern Arizona. The iron meteorite that blasted out Meteor Crater almost 50,000 years ago was traveling much slower than has been ass ...