Viewing a single comment thread. View all comments

serdasus101 t1_iynr3ud wrote

Reply to comment by mfb- in Did the impact from the asteroid that killed the dinosaurs change the earth’s orbit? by phoinex711

I saw in a documentary that 5 or 6 objects with a 500 km diameter hit the earth when it was just formed. Also, an object with the size of Mars hit and caused the formation of the moon and tilted the earth. Considering the perfect orbit of the earth, nearly circle, I think these didn't affect either. Am I correct? These were very big events. Please comment.

5

mfb- t1_iyps9oj wrote

A Mars-sized object (~10% the mass of Earth) can change the orbit significantly. It depends on the collision process.

500 km objects will have a pretty small effect.

4