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Hey Everyone,

It's time for the February Patreon Space Time hangout with Matt, Graeme and Andrew! It will be on Wednesday, Feb 26th at 6pm EST

To join just click the zoom link: https://us02web.zoom.us/j/87570473861

If you're a Hypernova, Quasar or Big Bang supporter make sure to check your email and/or join in with the same email that you use for Patreon, so we can bring you on as a video panelist.

If you can't make it, drop a question down below in the comments. We'll post the video after the event.

Thanks,
Andrew

Files

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Comments

Bryan Seigneur

How does the relative movement of arms of a galaxy (& anything at that scale) effect the structures at that scale over the long term? For example, the position of an entire Milky Way arm, say, 120 degrees from ours appears non-negligibly different in position to us than the whole simultaneous image of our home Galaxy would appear from (say 100 kly) due north. Surely our models take into account the light speed delay in the gravitational signal. I can't help but wonder how the effects of that delay (yes, yes, so to speak) compound over time, and if this offers any insight into the evolution of galaxies. Do the huge differences in velocities of galactic components combined with grav signal delays compound interestingly hundreds of millions of years?

Yury Kitaev

I've seen two seemingly different definitions of mass: sometimes we talk about it as something that represents all of the energy stored (E=mc^2), and sometimes we talk about it as something thats coming from the Higgs field. How are the two ways of looking at it related to each other?

Andreas

A while back the question was discussed whether gravity is quantum or not, ie whether a measurement would collapse a gravitational field. The picture was very much Copenhagen, how would things look like from a Many Worlds Interpretation point of view? Isn't there a difference here (since there's no collapse in MW)? Since they are interpretation they are not "allowed" to show differences after all?

Yury Kitaev

Did we ever get a recording somewhere btw? I wasn't able to attend :(