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2019-03-13: Will You Travel to Space?

  • 06:32: ... a few minutes in space the craft re-enters and lands. It never reaches orbital velocity so it's low speed reentry is less fraught than say the space ...

2017-07-19: The Real Star Wars

  • 02:01: Despite definitely being in space, these are called suborbital trajectories because they don't actually reach orbital velocity.

2015-11-25: 100 Years of Relativity + Challenge Winners!

  • 02:28: First, let's do the calculation in the frame of reference of Apophis' 2029 orbital velocity.
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