View Single Post
Mar7-12, 07:06 PM
P: 1,369
Say we shoot the surface of the moon with various sized steel balls of size a cm and larger, say up to a km in size. Say the balls hit the surface of the moon moving at 20,000 mph. Is there a simple formula for the mass of the ejecta as a function of the mass of the projectile? Will the formula depend on whether the projectile hits dust or rock or a combination of the two?

Thanks for any help!
Phys.Org News Partner Astronomy news on
Raven soars through first light and second run
Magnetar discovered close to supernova remnant Kesteven 79
Image: Hubble looks at light and dark in the universe