A major contribution of Johannes Kepler to the development of modern astronomy was:.

May someone explain how to do this question?

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?