A blackbody is at a temperature of 500°C what would be its temperature in Kelvin for it to radiate twice as much energy per second

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Idon’t quite understand this problem

How is the gravitational force related to the distance between two objects?