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Can't believe the dv for the spore reference.

This is kinda where "common knowledge" leads you astray. For scientific research even when correlation is not causation, it's usually jumping up and down and pointing to where you should be looking. It's fun to to point out piracy and global warming to be cute, but when you find close correlation you should be digging into it until you find a way to dismiss it.

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Dr Becky is pretty skeptical of this paper, and its her area of focus. Among other things, she says it doesn't properly account for the historical growth or spiral galaxies

Yes but how to observe the uniformity of the universe don't one have to observing it from somewhere other than said universe ? Just a thought

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It's an alternative history science fiction show. It starts with the Soviet Union being first to land on the moon and America increasing efforts on the Apollo program.

I really liked the first season. It is still clearly fiction, but they focused on making it as realistic as possible. After that they stopped caring about imagining an alternate history that makes sense and instead focused on personal drama.

No. Expansion is uniform everywhere. There is no centre of the universe, nor an edge.

No it definitely does not. The stage that is dropped is guaranteed to hit the ground before the lander. That's simple physics. The top continues to slow its descent while the bottom portion accelerates under lunar gravity towards the ground.

There's not much concern about it landing in the landing zone either. There's nothing to move the dropped stage off course. It's a simple ballistic trajectory. They'll plan a path, drop the stage so it follows that path, then continue their controlled descent which will use a different path to the surface.

This is exactly how nasa does it with landing on Mars. The heat shield is jettisoned and allowed to fall to the surface. It's done in a way that will keep it out of the final trajectory, and landing site, of the rover. There's no risk of it landing on top of the rover either, since the rover has a slower descent.

The main risk with the propulsion stage over a heat shield jettison is that the propulsion stage will still have residual fuel. Their main concern will be making sure it can't send debris flying over vast distances that could cause problems for either the lander or existing infrastructure.

If we get to the point of planning around existing infrastructure then it will likely mean they will have a set landing area. Stages dropped off will likely aim toward a "debris field" where they drop them towards an area far away and not planned for human visitation. Then the landers will land in the landing zone. Where they also will then take off from clearing the way for additional landers.

Both Sabine Hossenfelder and Dr. Becky (if anyone cares) are not buying into this.

Please remember that this is only a proposal with a lot of assumptions, and it hasn't been proven.

Have you got a source? That sounds cool

You sparked my curiosity.

This is what I found.

https://www.reddit.com/r/space/comments/1r22wr/will_the_mars_rover_go_anywhere_near_olympus_mons/

What??? $300 telescope? Mine is worth that much if not more and i literally see Jupiter as a very small white dot. How? Just how?

Callisto is in fact blessed to not be within Jupiter's protective shield.

(I got the "Europa is off limits" line, from Arthur C. Clarke. Nice.) Callisto is not entirely within the protective shield of Jupiter's magnetosphere, which might mean it is bombarded by the sorts of things that are unfriendly to living creatures like us. So it could be very difficult. Mercury, which does have a magnetosphere, is too close to the Sun, whose solar wind overpowers it at that range. So the Solar System is not very cooperative in this regard.

That was the Skylon idea, but it's not efficient and very complex.

Rockets do not need "air", they need oxygen.

Does where your standing in the universe affect any of this? If so then how?

The hypothesis, if I read right, is suggesting that there is a correlation between the expansion of the universe and the unexplained growth rate of supermassive black holes.

We don't know why they are as big as they are. We don't know why the universes expansion is what it is, but the 2 appear to be correlated.

Fascinating findings for sure, but what i don't understand is why they are so quick to publish findings that correlation might equal causation when anyone in science knows it does not

Well, in a manner of speaking, they might appear frozen in time- we can only see light at that distance, but let’s say we could see our friend Harry.

Since the light from Harry has to cross an increasingly large distance to reach us, he will appear to move slower and slower. It’s taking longer for light to reach us, hence longer for us to see change. Instead he just gets redder and redder, and kind of fades out.

This applies for space time dilation in other areas, ie, Black holes. If you watched Harry head into a black hole, you’d never see him suck in. Since gravitational dilation is rapidly increasing, Harry will slow to a freeze and red shift out. He is already gone but his image/light is taking longer and longer to reach you, until it can’t reach you at all.

Edit; I’ll add that due to the sheer magnitude of time on this scale, everything we observe seems pretty much “frozen in time”. It just takes too long anything big enough to observe to happen , we only get a snap shot. We get lucky and find this or that happening to a distant Galaxy, but we probably won’t be around long enough to see any process play out.

I was just learning of a theory yesterday that suggests gravitational waves leave an imprint permanently on the fabric of space, forever stretching it where the waves have passed. It's untested because engineering isn't there, but from what I read, it is a phenomenon that comes straight out of relativistic equations. I believe it was called gravitational memory.

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Years may pass with each day we move further from each other because of the enormity of space between us becoming greater and great with every moment of the universes expansion.

In only a million million million years, too. Time to stock up on our line of tactical survival socks!

Well, you later just said Olympus so then I thought of Greece 😂