Hop_David

3 ms·

1. 1.▲
   by Hop_David 7y ago

   Tyson's explanations are often wrong. Possibly the most inaccurate pop science celebrity who has every lived. Not remotely the same league as Richard Feynman.
2. 2.▲
   by Hop_David 8y ago

   Sagan's critics were wary of pop science. Would the need to entertain come before rigor and accuracy? And their fears were realized with Tyson. Possibly the sloppiest, most inaccurate pop science celebrity ever.
3. 3.▲
   by Hop_David 9y ago

   Tidal influence can keep an object oriented along the local vertical and keep the same face towards the primary. See, for example, Phobos. Or most the moons in our solar system. This is especially true if an orbiting object has attached to
4. 4.▲
   by Hop_David 9y ago

   As others have mentioned, The Hermes didn't follow a Hohmann trajectory. It is an ion propelled craft capable of 2 mm/s^2 acceleration. A very weak thrust but powerful in that it can sustain this acceleration for looooong burns. I