How much does the moon weigh?

Why are rabbits called bunnies? Why do they have fur? Why do bunnies have puffball tails? Why do rabbits have eyes on the sides of their heads? Why do rabbits hop? Our guest is Margo DeMello, professor of anthrozoology at Carroll College in Montana. She’s also a rabbit rescuer an ...  عرض المزيد

How does memory work? Why can’t we remember things that happened when we were babies? Why do we forget? Why are some people forgetful? Why do elephants have such good memories. What’s this episode about? I forgot! Oh yeah, how does our memory work! Our guest is Dr. Nick Turk-Brow ...  عرض المزيد

To us Earthlings, the moon is the ultimate cosmic chameleon. It’s always changing! Some nights it’s waxing, some nights waning, one day it’s full, and just two weeks later, it looks like there’s no moon at all. This is called a new moon, when the face of the moon is entirely in s ...  عرض المزيد

One of the best things about looking up at the night sky is gazing at our big, beautiful moon. But why do we get to have all the fun? Can a moon have its own moon? Harvard graduate student Chantanelle Nava helps us understand. Do you have a Moment of Um question for us that’s tot ...  عرض المزيد

What physical processes have shaped the Moon? In this lecture, I describe the surface features of the Moon (the Maria and Highlands), how crater density tells us the relative ages of terrains, and what we have learned about Moon rocks returned by astronauts and robotic probes. I ...  عرض المزيد

Have you ever noticed that the moon looks different at different times of the month? Not just the shape, whether it’s full and round or a tiny sliver – but the color also looks different sometimes. Maybe it’s dark orange, or silvery white, or even a bluish tinge. We asked astrono ...  عرض المزيد