289 TMD How to Use Geometry to Calculate the ...

What’s the point of learning math? Why is it so important that kids are exposed to mathematical thinking? And what do parents and teachers need to know about learning real math? Keep on listening to find out! Read the full transcript here: http://bit.ly/2mINl8z 

Learn how to use absolute values to find distances between numbers and places. Read the full transcript here: http://bit.ly/2lPuJQ7 

What are our units of measure in astronomy? To begin our exploration of astronomy, we first need to develop a common language for notating large numbers, and introduce the basic units of length, mass, and time that we will use throughout the quarter. This lecture is a quick revie ...  Show more

We love to look at stars. But have you ever wondered just how big stars are? Listen to this fascinating chat with Dr. Gerard van Belle, Chief Scientist for the Navy Precision Optical Interferometer at Lowell Observatory and he is going to tell us about the cool technology they us ...  Show more

Aujourd’hui, le mètre est une évidence. Il sert à mesurer nos tables, nos routes ou même la taille de nos enfants. Mais ce que l’on sait moins, c’est qu’il a fallu sept années d’efforts acharnés pour le définir avec précision. Et que cette aventure, à la fois scientifique et huma ...  Show more

When different groups of astronomers measure the expansion rate of space, they get different answers. Who's right? Or are they both right, and new physics is afoot?

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