Black hole is soaring between galaxies, leaving stars in its wake
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StarturnCaproc
Ars Centurion
The comments are slowly moving towards cheesy puns, just like Reddit. But it's ok, I needed a laugh today.
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how absolutely interesting it would be for there to be life on one of those stars. imagine a civilization trying to understand their place in the universe
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assuming this kind of thing has happened more than a few times in the past why don’t we see many intergalactic stars in sort of tendrils going out into the void? Presumably some of them would retain their rotational momentum from being the the galaxy. But damn a flinging super massive black hole going on a random path seems like the plot of the last season of Star Trek discovery
with the planet harvesting black-hole’ish device that the aliens are using for mining.
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Wheels Of Confusion
Ars Legatus Legionis
My gear is a point-and-shoot that I routinely put on the end of a long stick and dunk into local creeks and ponds.
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"You" being a familiar, casual term for "most people, statistically," I think the statement is just fine. The context is clearly not "average people but in a clean suit, clean room yet somehow with a dirty scratchy rag." It's "if you had a mucky spot on the camera at hand, you'd likely wipe it off."
Your statement also implies that photos cannot or at least should not ever be taken in adverse conditions such as dust, rain, humidity, high winds, near messes or potential messes. Using your lens cap so much that your lens never gets dirty means you're never taking a photo or otherwise imaging anything.
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No? Optical glass and coatings do need periodic cleaning. It's not fraught at all, it's quite routine, as the glass and coatings are very hard. Unless you use them in a clean room, your lenses will inevitably be exposed to moisture, dust, etc. and need cleaning.
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3 body problem with black holes, neat
I’m in the middle of re-reading that trilogy now
I’m in the middle of re-reading that trilogy now
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The reason I believe (Not An Astronomer) we don't see more tendrils may be due to the intergalactic gas turbulence.
Imagine a bullet being shot in a smoke chamber, filmed in slow motion. We see the shock wave, and the vortices in the bullet's wake. In the intergalactic medium, those denser regions would collapse to form stars, but their overall movement would be random. The gas wasn't gravitationally bound before, and the stars wouldn't either.
With time, they'd drift and become stragglers; at best, globular clusters could remain together and be visible.
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I mean you can even shoot large telescopes and they still function.
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This is an uncommonly intriguing astrophysical scenario - fascinating, actually. Lots and lots of interesting stuff going on there. Thanks for the great writeup, John.
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Once a sat next to an older couple on a plane, and the guy was complaining about such shmutz in his photos. Then he showed me his SLR (not D, this was decades ago) and how he'd gone in with a lens paper and cleaned the front-surface mirror there. At that point forget shmutz, you could see that he'd damaged the silvering.
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When I used to play, hitting a jump shot so hard that the ball flew across the room got you thrown out of the pool hall. Whoever did this isn't a god, they're a very naughty boy.
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"An alternative road to ejection occurs if one or more galaxy mergers happen in relatively quick (in astronomical terms) mergers"
Second paragraph under "Old Theories", this sentence perhaps was intended to end with "succession" instead of "mergers".
Second paragraph under "Old Theories", this sentence perhaps was intended to end with "succession" instead of "mergers".
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Could be interesting, as, they try to calculate whether a merger will take place, how much energy will be (has been) released, and in what form.
Things are bad enough in galactic cores where the average distance between stars is only in the hundreds of AU's, only 10's of times the distance between planets. And each star on its own orbit, so stars passing through your solar system from time to time, scattering or exchanging planetary bodies.
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Used to be possibly even more embarrassing back in the old days – one could happily shoot a full roll of film through a Leica and not realise they had the lens cap on ;-)
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Aren't there tonnes of dust and other space debris falling on earth every day? Surely some of that must get onto Hubble? How do they keep it clean and clear?
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Egan's Incandescence novel is about a civilisation developing in a splintered world's remnant, caught by and orbiting around a travelling black hole or a neutron star. And the merger they have to somehow survive is actually there, though "only" their "sun" breaking and gobbling up another star, all in the galactic core. Does that check most of the marks?
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This was obviously fired from the New First Order's successor to Starkiller Base. Pity the Resistance target this was aimed at a long time ago in a galaxy far, far away.
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darkpraxis
Wise, Aged Ars Veteran
As opposed to JWST’s exposed mirrors, Hubble’s mirrors are deep inside its metal cylinder body and I’m sure those in charge of its orientation are very careful to never point the cylinder’s opening in the direction it is traveling.
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"...it wasn't unusual to pick up your newly developed snapshots and find yourself wondering what it was you had taken a picture of."
Much like me often running across a piece of paper with a note to myself that obviously made perfect sense at the time....
Much like me often running across a piece of paper with a note to myself that obviously made perfect sense at the time....
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