astronomy

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henfredemars, w NASA's been pulling out of major astronomy meetings — and scientists are feeling the effects
@henfredemars@infosec.pub avatar

NASA is kill. They had something like a 50% budget cut planned.

Minarble, w Webb telescope just snapped direct image of worlds many light-years away

You are looking at actual images of planets from another solar system… I just think that’s neat!

Gradually_Adjusting,
@Gradually_Adjusting@lemmy.world avatar

That’s a trip. I keep having that moment with the JWST where I think okay, now I get the hype and then it surprises me again.

espentan,

I, too, think that is neat!

Who knows, maybe on one of them there are people, and maybe they put the dumbest one of them in charge, and now everyone is having a terrible time.

XeroxCool,

I saw the image embedded in one of the comments here before hut somehow didn’t realize the gravity of it until this thread

pwnicholson, w Saturn has 128 new moons – more than the rest of the planets combined
@pwnicholson@lemmy.world avatar

*“Newly identified moons” I’m pretty sure they’ve been there for a while.

Having 128 new moons would really be noteworthy!

Coreidan, w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032

I’ll only panic if it misses

GlassHalfHopeful, w Astronomers just deleted an asteroid because it turned out to be Elon Musk’s Tesla Roadster
@GlassHalfHopeful@lemmy.ca avatar

Can we please fine him a few billion dollars for intentionally littering in space?

halcyoncmdr,
@halcyoncmdr@lemmy.world avatar

Better fine the US government or NASA for all the Saturn V upper stages that are floating around up there as well. Nearly every Saturn V third stage was sent into an orbit around the sun after the Lunar injection maneuver, they’re all still up there. In fact, they lose track of those and “rediscover” them all the time because. The three-body problem is not fully solvable with our current technology, and the further out you get from initial conditions the less accurate calculations become.

GlassHalfHopeful,
@GlassHalfHopeful@lemmy.ca avatar

I mean, I’m very okay with that too. 😁

some_guy, w Size Comparison: Pluto and Australia

No shit? Wow, it’s amazing that we were even able to find it.

troyunrau,
@troyunrau@lemmy.ca avatar

Even more amazing that it was found in the era it was. People were pouring over the skies looking for the next big planet, and instead they found this little guy.

There are still some orbital dynamics suggestions that something large and dark is lurking out there – an ice giant. But it’s still largely conjecture. It’d be interesting to see how they define it should they find something very large (say Neptune mass), but it hasn’t cleared its orbit. Is it a planet or not? :D

lugal,

Actually 🤓 it was James Cook who found Australia and he didn’t go there by ski but by ship and he didn’t find one little guy but exterminated a whole indigenous population

troyunrau,
@troyunrau@lemmy.ca avatar

Ah shit, a switcheroo!

Buddahriffic,

They only found it because it’s more like a binary dwarf planet system than a planet/moon system, so the telescopes were able to pick up light reflected from both Pluto and Charron, while Pluto alone might have not been bright enough.

deegeese, w From a Million Miles Away, NASA Camera Shows Moon Crossing Face of Earth - NASA

Cool article and photo, but if this sounds familiar, it’s because it’s 9 years old.

14th_cylon,

i still remember when i saw this for the first time.

  • “omg, what a pathetic fake, people will believe anything these days"
  • opens tineye
  • "wait, what?”
thanks_shakey_snake, w NOAA says ‘extreme’ Solar storm will persist through the weekend

Friday was amazing, tonight was a bust (but just looking at stars on their own was pretty cool, so no regrets)… Fingers crossed for tomorrow and Monday!

niktemadur,

Where abouts?
Where I’m at - northern Baja - of course there had to be a persistent nighttime marine layer, which only starts to clear once the sun is up.

Hikermick, w [Eric Berger] Seeing this eclipse is probably the highest-reward, lowest-effort thing one can do in life

I live in the path of totality and I’m already tired of hearing about it.

Letstakealook,

Agreed. I’m not looking forward to it either. I’ll be at work, most people are probably going to call in, and there will be hours of traffic when get off.

Rolder,

Best chance I’ll ever have personally. Live in the path, work from home, good time. Plan is to just step outside for a bit, look at it (with protection) then back to work.

HeartyOfGlass, w "Cannibal" star left with metal scar after swallowing its planet

I see it’s time for today’s round of “Headline or Slayer Lyrics”

Potatisen, w Big, doomed satellite seen from space as it tumbles towards a fiery reentry on Feb. 21 (photos)

That’s not a satellite, that’s the Empire coming for us!

Sendpicsofsandwiches,
@Sendpicsofsandwiches@sh.itjust.works avatar

THEY’RE STRIKING BACK!

Tetra, w Map reveals all the space junk we've already littered on Mars
@Tetra@kbin.social avatar

I'm glad the article mentions that in this case, it really doesn't matter; like, there seems to be nothing to 'pollute' on Mars (also 7 tonnes is not much at all). Bit of a strange headline to me.

xor,

if it gets contaminated with earth life the it’ll be harder to detect martian life…

PoopingCough,

You’re not wrong with your sentiment but i think it’s pretty safe to say that if we find life on Mars it’s gonna be trapped in ice somehow or deep below the surface. Besides having next to no atmosphere, it also has no magnetosphere which means it takes the full blast from solar radiation. Nothing living on Earth could survive outside on the surface of Mars.

Deceptichum,
@Deceptichum@kbin.social avatar

Tardigrades could potentially survive, but they would starve to death.

xor,

we have quite a bit of life that thrives just under the surface… within nooks and crannies of dust particles… inside Chernobyl… in ocean volcanic vents…

i think mycelia are the only thing that can live off of just raw rock though (the vanguards of life)
but, spores are pretty small and everywhere…

personally i think we should get over looking for life on mars and seed it with whatever has the best chances…

a deep valley has a thicker atmosphere and more shade from the sun, btw…

Tetra,
@Tetra@kbin.social avatar

I suppose so, but I believe they always make sure not a single trace of Earth life is left on the equipement they sent to Mars, for obvious reasons. So they already control for that.

Besides looking pretty messy, I'm not sure this does any harm.

xor,

nasa sure puts a lot of effort into it… can’t say i feel confident about other countries that crash into it…
on top of that, nasa has recently found that they’ve been breeding bacteria that lives off of their disinfectant, and so no they don’t already control for that.

XeroxCool,

Mars is inhabited by robots, but the Moon is inhabited by tardigrades because China crashed a lander.

xor,

this one?

Sad news for the tardigrades that were on board Israel’s Beresheet mission, which crash-landed on the Moon in 2019. Researchers have learnt that the microscopic animals, which can survive the vacuum of space and heavy-duty doses of radiation, wouldn’t have lived through the crash.

XeroxCool,

Wrong country and wrong outcome, I really nailed it. Given how hardy they are, I can’t say I’m convinced they’re all dead. Not that they’d actually be active without air and water

PrincessLeiasCat, w Giant Mirrors in Space Could Bring Sunlight After Dark, One Startup Says—and Astronomers Are Concerned

No, no, no, fuck you, fuck your space startups, fuck your VC’s, just stop.

iamdefinitelyoverthirteen,

Fuck that space startup in particular. There are a lot of good ones too.

PrincessLeiasCat,

Fair enough.

TropicalDingdong, w “The models were right”: astronomers find ‘missing’ matter
ShittyBeatlesFCPres, w 'It's extremely worrisome.' NASA's James Webb Space Telescope faces potential 20% budget cut just 4 years after launch

Elon is probably mad it launched on an Ariane 5 and it went so perfectly, we’ll get an extra decade of science out of it.

The Ariane 5 really was a reliable rocket. It had some failures early on, like basically all rockets, but then it had 82 successful launches in a row and then one partial failure before having another long perfect streak.

https://lemmy.world/pictrs/image/2c41d971-9cec-4bbe-81ef-32d8a246c2d5.jpeg

Obviously, more expensive than modern reusable rockets but JWST was important enough of a payload, that I’m glad NASA/ESA chose Ariane. (Plus, given JWST’s delays, I imagine when that decision was made, SpaceX was still iterating and having occasional explosions.)

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