Through a combination of data analysis and numerical modeling work, researchers have found a record of the ancient moon-forming giant impact observable in stony meteorites. The research indicates numerous kilometer-sized fragments from the giant impact struck main belt asteroids at much higher velocities than typical main belt collisions.
Damages from U.S. hurricanes between 1970 and 2002 cost $57 billion. UA scientists say that better predictions can help with emergency preparedness, which could limit damages, cut costs and save lives.
Observations with UA observatories in Arizona and space observatories reveal glimpses into how today’s galaxies came to be. Using one-of-a-kind instrumentation, astronomers were able to study large numbers of "mystery galaxies."