astronomy

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JizzmasterD, w Earth to have new mini-moon for two months

Ah, PT Cruiser in orbit!

kamenlady, w Earth to have new mini-moon for two months
@kamenlady@lemmy.world avatar

Completely out of context, but your username always reminds me of one of my faves nigelthreetimes

BKXcY86CHs2k8Coz, w Tiny glass beads suggest the moon had active volcanoes when dinosaurs roamed Earth

Moon Volcano is my new bandname

Nuke_the_whales, w Tiny glass beads suggest the moon had active volcanoes when dinosaurs roamed Earth

I didn’t realize the moon was ever anything but just a dead rock floating there

Beacon, (edited )

The leading hypothesis is that the moon was formed when a massive asteroid smashed into the earth and blasted a huge chunk of the earth into space, and that became the moon. If true then the moon's birth and younger existence was wildly cataclysmic

https://en.m.wikipedia.org/wiki/Origin_of_the_Moon

threelonmusketeers,

a massive asteroid smashed into the earth

Asteroid, or proto-planet?

Beacon,

Wiki refers to it as a "mars-sized body"

MelodiousFunk,
HurlingDurling,
@HurlingDurling@lemmy.world avatar

So… the planet or candy bar?

Yes it’s a joke, however if a mars candybar hits earth at 99.999999% of the speed of light, I’d imagine the impact would be anything but a blip

expatriado, w Tiny glass beads suggest the moon had active volcanoes when dinosaurs roamed Earth

so, 96% of its life, and we just missed it

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

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

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

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!”.

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