Dr. Universe: How are coins made? -Dahlia, 10, Olympia, WA
rcwebberDr. Universe: What creature has lived on Earth the longest and is still alive until today? -Tracie, 12, Singapore
rcwebberDr. Universe: Why do we have a tailbone? -Tyler, 15, East Liverpool, England
rcwebberDear Tyler,
At the very bottom of the human spine is a bone that sticks out a bit called the coccyx (cox-ix). We sometimes call it the “tailbone,” but it is actually made up of several different spinal bones.
In some animals that actually have tails, those different bones at the bottom of the spine help them move their tail around. But in humans, those bones partially fused together.
Read More ...Dear Dr. Universe: Why do flowers smell so nice? – Miles, 5
rcwebberDear Dr. Universe: How many different types of plankton are there? Are there freshwater plankton? – Arielle, 11
rcwebberWhy do we have different feelings? - Charan and Aishwarya V., 10 & 8, Rutherford, New Jersey
rcwebberDear Charan and Aishwarya,
Imagine you are playing a game of soccer and your best friend is on the opposing team. The sun is out, you are having a great time, and you score the winning goal. You’d probably feel pretty happy and so would your team.
Read More ...How do animals get to islands? -Jax, 8, Wash.
rcwebberDear Jax,
Animals make their journeys to islands in different ways. Some float. Some fly. Others will swim.
Read More ...Dear Dr. Universe: What color are our stars? -Mira, 8, Ontario
rcwebberDear Mira,
Just the other night, I grabbed my binoculars and looked up to the starry sky. At first the stars looked white, but when I looked closer I noticed some appeared more blue and red.
Read More ...Why do we hear the sea in a seashell? -Steve, Minnewaska School, Minnesota
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Dear Steve,
Whenever us cats go to the beach, we tend to keep a safe distance from the water and like to explore the shore. I once stumbled upon a big, beautiful pink and white seashell.
Read More ...Why do we get brain freezes -Hannah, 9, Monroe Elementary
rcwebberDear Hannah,
You’re enjoying some ice cream, when suddenly you feel a pain in your head that hurts a whole lot. It’s like it came out of nowhere, and in a matter of seconds, it’s gone.
Read More ...