How can we let aliens know we're here? What does a lunar eclipse look like as seen from the Moon? Can we record a supernova in real time? Why aren't coronagraphs just circles? Answering all these questions and more in this week's Q&A show.

Ian Lauer
   / @ianlauerastro  

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00:00 Start
00:37 [Andoria] Can we signal to aliens with green glass?
06:39 [Vulcan] Lunar eclipse seen from the Moon
11:24 [Risa] Can we record a supernova appearing in real-time?
16:05 [Aeturen] Why aren't coronagraphs just circles?
20:53 [Vendikar] How do astronomers determine distances to other galaxies?
25:02 [Remus] Who was my favourite interview?
28:01 [Janus] How do astronomers determine the age of stars?
31:11 [Cait] Can we move Earth by the time the Sun will die?
34:31 [Betazed] Why does the Moon look bigger and yellow sometimes?

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