astronomy

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grrgyle, w Size Comparison: Pluto and Australia

No way!

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.

MonkderVierte, w Size Comparison: Pluto and Australia

TIL australia has hydrostatic equilibrium.

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

Etterra, w Size Comparison: Pluto and Australia

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

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!”.

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

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.

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

👌

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.

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

Yeah, science!

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,
Rentlar, w NASA's solar sail successfully spreads its wings in space

Thank you NASA, I didn’t know I needed

BIG SPACE KITE 🪁

LostXOR,

Space kites are the best kind of kite!

Noodle07,

Omg we missed space kite surf at the Olympics can’t believe we screwed up so hard

kenkenken, w NASA's solar sail successfully spreads its wings in space
@kenkenken@fedia.io avatar

Oh no, Ramiel is already here!

flicker,

Poor Shinji.

HurlingDurling, w On the Formation of Trapped Electron Radiation Belts at Ganymede
@HurlingDurling@lemmy.world avatar
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