Which astronomical events can only be seen with gravitational waves? Is there enough water on the Moon for a permanent colony? Can we use stars other than the Sun as gravitational lenses? Does the present even exist or are we always living in the past? All this and more in this week's Q&A session.

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00:00 Start
00:40 [Tatooine] Which things we can see only with gravitational waves?
10:38 [Coruscant] How can the Universe be larger than 13.8 billion light years?
13:26 [Hoth] Are we all living in the past?
16:04 [Naboo] How's the search for Planet 9 going?
18:57 [Kamino] Are there rare elements on Mars?
20:34 [Bespin] Is there enough water on the Moon for a permanent colony?
22:11 [Mustafar] Can we use other stars as gravitational lenses?
25:01 [Alderaan] Are strange isotopes and rare elements created in supernovae?
27:01 [Dagobah] Worst space-related movie regarding Physics?
28:49 [Yavin] Do gas giants have solid cores?
29:59 [Mandalore] What would I do if I met aliens?
33:29 [Geonosis] What would I do as a NASA Chief?


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