astronomy

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TheEEEdiot, w Highest-resolution black hole images ever taken usher in a new era
GBU_28,

I wanted to share a face reaction screenshot from the movie but every example I found I figure would get me banned lol

zer0squar3d,
PunnyName, w Highest-resolution black hole images ever taken usher in a new era

Yeah, science!

onlinepersona, w Researchers identify effective materials for protecting astronauts from harmful cosmic radiation on Mars

Not sure if this belongs here, a physics, or a tech community 😅

Anti Commercial-AI license

teft,
@teft@lemmy.world avatar

This works here but maybe also in shitjustworks/c/spaceflight too. Or lemmy.world/c/space. Those are both pretty active space communities.

threelonmusketeers,

Instance agnostic links: !space and !spaceflight.

ekZepp, w Scientist performs the first nonlinear study of black hole mimickers
@ekZepp@lemmy.world avatar

A nonlinear study refers to an approach that does not follow a straight, sequential path in analyzing or modeling phenomena. Instead, it allows for complex relationships where changes in one variable do not directly correspond to changes in another, often leading to unpredictable outcomes. In the article, a Princeton scientist explored the nonlinear dynamics of boson stars, a type of black hole mimicker. His research revealed unique gravitational wave signals during mergers, distinct from those of traditional black holes, which could aid in identifying these mimickers in future gravitational wave observation

DaMonsterKnees,
@DaMonsterKnees@lemmy.world avatar

And we found the MVP. Cheers to you, mate, and your explanation, thanks!

Lookorex,

I would also like to thank you for that

ekZepp,
@ekZepp@lemmy.world avatar

👌

troyunrau, w Senate bill would create center to study satellite interference with astronomy
@troyunrau@lemmy.ca avatar

This is a pop-science problem and not a real science problem. Any astronomy imaging system worth its salt has image stacking algos that remove transients easily enough.

Gnomie,

Here’s an actual scientist saying the number of satellites interferes with astronomy.

troyunrau,
@troyunrau@lemmy.ca avatar

Hi, it’s me. An actual scientist. Did grad school in planetary science. The same techniques we use to spot asteroids are the techniques used to spot satellites. But removing them is even simpler. It’s not algorithmically hard at all.

In fact, it’s so simple that I’ll write it out: take several images (at least three) in quick succession and take the median value across those images.

Oh hey, that was easy. Makes a good despeckle filter too for cosmic ray strikes or whatever else.

Pyr_Pressure, w Size Comparison: Pluto and Australia

I can see why they no longer call it a planet, what’s the cutoff for asteroid size?

johannesvanderwhales,

It is still a dwarf planet. Basically when it hits hydrostatic equilibrium, i.e. when it’s round, it is considered a dwarf planet. More here

Burn_The_Right, w Size Comparison: Pluto and Australia

So… Does this mean Australia is no longer a continent?

Murdoc,

Dwarf continent

Buddahriffic,

If that photo was taken right before impact, none of the continents will remain continents because it’s all about to melt and we might have another moon when everything settles down and we evolve back from scratch over the next several billion years.

Burn_The_Right,

The only survivors would be Australia’s infamous Magma Spiders.

P00ptart,

Just in time to get baked by the sun!

lolcatnip,

Or does it mean Australia is a planet?

Burn_The_Right,

I’m sure the rest of the world would agree!

jol,

Australia would have to round up its edges and clear it’s orbit of little islands before being called a planet.

Iheartcheese,
@Iheartcheese@lemmy.world avatar

Mostly just a cunt

faceula,

Sand Mass?

Landless2029,

Seems like it amounts to a gas giant down under.

Zozano,
@Zozano@lemy.lol avatar

It never was. The concept of Australis is part of spherical world order.

Do you really think a Platypus is a real animal? A mammal that let’s eggs and has bioluminescent fur. Get the fuck outta here.

abcd, w Size Comparison: Pluto and Australia

Is Neil deGrasse Tyson hiding somewhere in Australia?!

Zozano,
@Zozano@lemy.lol avatar

I saw him in my mates house the other day kissing a mirror? He said he is the only person he can kiss in the mirror or something.

Freefall, w Size Comparison: Pluto and Australia

In future news; Donald X Musk III, worlds first quintillionare, decided to alter Pluto’s orbit to collide with Mars “Becauth it would be thoo cool!”.

Etterra, w Size Comparison: Pluto and Australia

That’s awesome. And to think, it’s only slightly less inhospitable in Australia!

captain_aggravated, w Size Comparison: Pluto and Australia
@captain_aggravated@sh.itjust.works avatar

Meanwhile, Australia is down there like “WTF mate?”

milicent_bystandr,

Nah, no one likes lives in that part of Australia. Pluto sitting there just means drivers from Perth to Sydney have to take a little detour.

captain_aggravated,
@captain_aggravated@sh.itjust.works avatar

I mean, I’m pretty sure you’d be able to see it from everywhere in Australia, so I bet many of them would be like “WTF?” But they’ll be dead soon. Fuckin’ kangaroos.

TonyOstrich,

Fucking kangaroos

MonkderVierte, w Size Comparison: Pluto and Australia

TIL australia has hydrostatic equilibrium.

lugal, w Size Comparison: Pluto and Australia

Still, the surface area is much bigger. Pluto is a real continent

Uebercomplicated,

Discreetly insulting both Australia and Pluto in one sentence! Absolutely love this; will share it with all my Australia and Plutonian friends! If Earth gets attacked, it’s not my fault, but yours :'P

NigelFrobisher,

If Australia attacks Earth you’ll know you’ve been attacked.

zerofk,

Australians can’t attack Earth, they’d fall right up into the sky without some reverse-reverse-gravity system.

niktemadur, w Size Comparison: Pluto and Australia

I’m digging the way the map shows Tasmania as part of the continental plate.

Piemanding,

Is it on purpose or is it because of ocean depth?

niktemadur,

The light blue part is shallow and when it’s underwater, they call it “continental shelf”.
Tasmania and mainland Australia are connected by the same, shared continental shelf.

x4740N, w Size Comparison: Pluto and Australia

Pluto is still a sphere, this is an unfair comparison because Pluto hasn’t been unwrapped

UnderpantsWeevil,
@UnderpantsWeevil@lemmy.world avatar

It’s actually 4π*(0.5*(length-of-australia))^2 bigger than that.

doctordevice,

Fun fact: the surface area of Pluto is only about 4% larger than Russia.

RandomVideos,

So thats why Russia wanted to expand

NigelFrobisher,

Pluto unboxing video.

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