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For future missions to the moon or Mars, astronauts are going to need a new suit. Engineers like MIT’s Dava Newman are hard at work — but it’s a big ask. Designing a suit that protects astronauts while still allowing them the mobility to work in space or on another planet is tough. We’ll speak with Newman about the design challenges of making a new spacesuit and how the work done at her lab could help all of us here on Earth.

Then, we know the speed of light, the speed of sound — but what about the speed of gravity? This week on “I’d Like to Know” we chat with our panel of experts on the intricate measurement of gravity and how colliding black holes are helping us understand its speed.