Colliding Asteroids (IMAGE) University of Chicago Caption This series of images simulates the collision of asteroids measuring 10 kilometers (6.2 miles) and 100 kilometers (62 miles) in diameter. The blue region consists of tracer particles to track post-shock temperatures in planesimal material for comparison to mesoscale simulations of the same process and meteorite characteristics. Credit Bland et al., 2014 Usage Restrictions News organizations may use this image in connection with reports about the work of Fred Ciesla and his associates. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.