phys.org

TauZero , to Astronomy in Black holes could come in 'perfect pairs' in an ever expanding universe

Oh! They don't mean that black holes must come in perfect pairs! The headline makes it sound like it's about wormholes across vast distances. No! What they've found is a stable "orbit" solution for the two-body problem. Normally when you place two bodies anywhere in an empty universe, they will gravitate towards each other until they collide. But in a universe with dark energy, there is some perfect distance between them, where the accelerating expansion perfectly counterbalances the accelerating attraction. They've used general relativity math to actually calculate such an arrangement.

The "stable" orbit in this case is the same kind of stable as a pencil balanced on its sharp tip - if it tilts even slightly one way it will fall out of control. Although they tantalize the idea that they might be able to make it truly stable against small perturbations once they finish their spinning black hole solution.

I would like to have known some specific numbers examples! Like if you have as much dark energy as our universe, and two 10-solar-masses stellar black holes, how far apart would that be? Is it like 1Ly or 1MLy? How far for two 10-million-solar masses supermassive black holes? The formulas they created should give the exact answer but I am not skilled enough to substitute the correct numbers for the letters.

Ashyr , to Science in Rats have an imagination, new research finds

Nothing so smart should live such a short time. I’d love to have them as pets, but saying goodbye every few years would be too much.

big_slap ,

this is just how I feel about pets in general. I recently adopted a senior dog and my mind just jumps to the end cause I love her so much

rifugee , to Science in Rats have an imagination, new research finds

Well, of course! It takes imagination to be a great chef.

cabron_offsets , to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ in Study finds anti-piracy messages backfire, especially for men

Make it easy for me to get the shit that I want and maybe I won’t pirate. It’s fucking easier to just pirate shit than to sign up for a bunch of services and deal with asscunt companies. Fuck you.

018118055 , to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ in Study finds anti-piracy messages backfire, especially for men

If buying is not owning, copying is not stealing. Simple as that.

WaylandHater26 , to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ in Study finds anti-piracy messages backfire, especially for men
@WaylandHater26@lemmy.zip avatar

Those Ads at the beginning of legitimate copies of DVDS and movies, really bugged me, like why are you annoying the people who actually bought the product!? Also the people downloading stuff online seemed cool in those videos so I think the ads had the opposite effect a lot of the time.

Kolanaki , to science in New evidence found for Planet 9
@Kolanaki@yiffit.net avatar

By all rights it should be planet 10. Pluto got shafted.

Tarquinn2049 ,

Unfortunately, Pluto was a victim of how hard it is/was for us to detect planets and other objects at that distance. It was the first one we saw for a while, but once we got a clearer picture, there was no way we could keep calling it a planet.

sorghum ,
@sorghum@sh.itjust.works avatar

Nah, it's easy.

Pluto is a planet.

See? Not that hard.

Edit: My bad, I thought I was in !science_memes

subignition , to science in New evidence found for Planet 9
@subignition@kbin.social avatar

A new planet in a distant orbit, you say?
In before the signal is older than the universe itself.

Charred ,

The downvotes are not getting the reference smh.

Science compels us to blow up the sun!

dezmd , to science in New evidence found for Planet 9
@dezmd@lemmy.world avatar
TheControlled , to science in New evidence found for Planet 9

Back in my day it was called Planet X, god dammit!

JamesTBagg ,

Because back in my (our) day Pluto was number, so Planet X worked. Planet VIIII doesn't look as good.

5wim ,

Uh, you mean "IX"?

Klear ,

That means "Boy who is not able to satisfactorily explain what a Hrung is, nor why it should choose to collapse on Betelgeuse Seven". I don't see how that applies here.

5wim ,

Fair

Gabu ,

VIIII is a valid way to write 9, though antiquated. If you look at very old clocks, you'll see they all use this notation.

5wim ,

Didn't realize homie was an antiquated clock.
(Assumed the usage of Roman numerals, like in the references being made, in which case I don't believe the clumsy VIIII only used on old clocks would really be valid.)

Opisek ,

The reason clocks use it, is to not make it look visually unbalanced. Most often they write 4 as IIII. I find it infuriating to break such a simple rule though.

But also, I've never ever seen VIIII.

Gabu ,

Julius Caesar's memoir of war in Gaul makes use of VIIII, for instance. You're right that it's much rarer, but was still used contemporarily and in modern times.

Sanctus ,
@Sanctus@lemmy.world avatar

Yes, Ix, let's start naming these planets like its classic SciFi.

downpunxx , to Futurology in Marriage of synthetic biology and 3D printing produces programmable living materials
@downpunxx@fedia.io avatar

Kosher

HaywardT , to Fuck Cars in Tire toxicity faces fresh scrutiny after salmon die-offs

I wish we would use this term instead of microplastics since microplastics are composed of 78% tire dust.

Mishmash2000 ,
@Mishmash2000@lemmy.nz avatar

You're so right! When something is almost 80% of a thing, it's more or less that thing now. It's that thing, plus some other stuff but the focus has to be on the thing that is almost 80% of the issue. If we reduce car tyre derived microplastics by one quarter it would be the equivalent of completely eliminating ALL other sources of microplastics. The issue needs reframing badly!

HaywardT ,

I think it is intentional to get the focus off the problem. "It's not that one industry, it's all the little things. Give up your plastic straw. Give up your plastic bag. It's your fault and in your control. We are just over here turning oil into tires for your convenience."

Mishmash2000 ,
@Mishmash2000@lemmy.nz avatar

It could backfire though because people now understand that microplastic = bad so all we need to say is "You know those pesky microplactics? Yup. Well, basically tyre!".

Pyr_Pressure ,

Well, we call the stuff we breath "air" despite it being 80% nitrogen. It would be a bit weird saying we breath nitrogen. "Air" is a general catch-all term for the mixture of things that we breath.

Excrubulent , to Fuck Cars in Tire toxicity faces fresh scrutiny after salmon die-offs
@Excrubulent@slrpnk.net avatar

We have to keep secret all this material that may or may not be toxic but is definitely all around us because otherwise tyre makers might not be able to sell us as many tyres, and that's really important for some reason.

maculata , to Astronomy in How NASA's Roman mission will hunt for primordial black holes

I don’t think there are many black holes in Rome. But I suppose they really want to make sure.

OpenStars , to Earth, Environment, and Geosciences in World extends run of heat records for an 11th month in a row
@OpenStars@discuss.online avatar

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