Q & A
Feb 01, 2020
2 minutes
BY LIZZIE WADE
Q: Was there life on Mars ever? And if scientists found a way to live on a different planet, would they tell people they could live there and make it a new Earth??
—Emilyann O., age 11
A: Chris McKay, a planetary scientist at NASA Ames
You’re reading a preview, subscribe to read more.
Start your free 30 days