Dr. Universe: We read that it is very cold in space. Why is that? -Tri-County Second Graders, Minnesota
rcwebberDear Tri-County Second Graders,
You heard right. It is very cold in space, but it wasn’t always that way.
Read More ...Dear Tri-County Second Graders,
You heard right. It is very cold in space, but it wasn’t always that way.
Read More ...Dear Andres,
If it weren’t for greenhouse gases, Earth would be an extremely cold, deserted planet. Plants couldn’t grow and animals like us wouldn’t be able to survive.
Read More ...Dear Jordan,
As a cat, car rides can sometimes make me feisty. But as a scientist, it’s fascinating to learn about the mechanics, engineering, and chemistry fueling the cars humans drive every day.
Read More ...Dear Graylon,
Your question takes us on a journey deep into the Earth. Figuratively speaking, of course. It’s really hot under Earth’s surface. It’s so hot it can melt rock. This melted rock is known as magma. And anything that erupts magma is a volcano.
Read More ...