Heidi Kendall

Latest Articles

What exactly is stellar energy?

Does the universe look the same in all directions?

What is the start of a star called?

What's left behind after a supernova explosion?

Is there another planet within Earth?

Which of the following describes the transit method?

What was the last thing NASA launched?

How is a star born step by step?

How long was Dan Goldin the NASA administrator?

Why are some moons geologically active even though they are much smaller than planets?