World Science Scholars
1.5 The Expanding Universe
office hours

Office Hours provide a series of questions and video answers that relate to the concepts covered in a given module or extend the lecture material for those who want to go deeper. Click on a question to play the corresponding video answer.

What is a standard candle?
What is the cosmic distance ladder?
Did you have a specific teacher who got you interested in science?
How important is mentoring?
In what ways are you a mentor?

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