astronomy

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Galapagon, w After 30 years, I'm finally going to see a total solar eclipse. Also, Potato World is a thing.

“camped” out in Quebec, my son speaks better French than me and has corrected me all weekend, but we’ll see whose in charge when I poke him in the eyes two seconds before totality… Or squeal like a school girl as it approaches, we’ll see which happens!

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

Well some effort is required. You can’t just look up at the eclipsed sun with your bare eyes.

thessnake03,

I mean there’s that 4 minute widow it’s cool

ChaoticNeutralCzech,

It will be shorter unless you are in the center of the eclipse path.

Yarra,

Not with that attitude anyway

sin_free_for_00_days,

The last person I saw try to look at an eclipse was some idiot, I can’t remember his name.

https://sopuli.xyz/pictrs/image/b94921e2-48a4-4c0b-bb72-0f71e5c11db5.webp

JimVanDeventer,

During totality you can.

Gabu,

If you want to burn a halo on your eyes, sure.

JimVanDeventer,

Noticing a bit of misinformation here so let’s clear this up: take off your eye protection during totality. The corona is so faint you won’t see anything at all through eclipse glasses.

ShepherdPie,

When it’s completely covered you can. I did it in 2017. This is like saying looking at the moon will burn your eyes out.

mozz, w Cosmic cleaners: the scientists scouring English cathedral roofs for space dust
@mozz@mbin.grits.dev avatar

A minor accident had forced me down in the Rio de Oro region, in Spanish Africa. Landing on one of those table-lands of the Sahara which fall away steeply at the sides, I found myself on the flat top of the frustum of a cone, an isolated vestige of a plateau that had crumbled round the edges. In this part of the Sahara such truncated cones are visible from the air every hundred miles or so, their smooth surfaces always at about the same altitude above the desert and their geologic substance always identical. The surface sand is composed of minute and distinct shells; but progressively as you dig along a vertical section, the shells become more fragmentary, tend to cohere, and at the base of the cone form a pure calcareous deposit.

Without question, I was the first human being ever to wander over this . . . this iceberg: its sides were remarkably steep, no Arab could have climbed them, and no European had as yet ventured into this wild region.

I was thrilled by the virginity of a soil which no step of man or beast had sullied. I lingered there, startled by this silence that never had been broken. The first star began to shine, and I said to myself that this pure surface had lain here thousands of years in sight only of the stars.

But suddenly my musings on this white sheet and these shining stars were endowed with a singular significance. I had kicked against a hard, black stone, the size of a man's fist, a sort of moulded rock of lava incredibly present on the surface of a bed of shells a thousand feet deep. A sheet spread beneath an apple-tree can receive only apples; a sheet spread beneath the stars can receive only star-dust. Never had a stone fallen from the skies made known its origin so unmistakably.

And very naturally, raising my eyes, I said to myself that from the height of this celestial apple-tree there must have dropped other fruits, and that I should find them exactly where they fell, since never from the beginning of time had anything been present to displace them.

Excited by my adventure, I picked up one and then a second and then a third of these stones, finding them at about the rate of one stone to the acre. And here is where my adventure became magical, for in a striking foreshortening of time that embraced thousands of years, I had become the witness of this miserly rain from the stars. The marvel of marvels was that there on the rounded back of the planet, between this magnetic sheet and those stars, a human consciousness was present in which as in a mirror that rain could be reflected.

-Antoine de St. Exupery

essteeyou,

Wow, that is such evocative writing!

mozz,
@mozz@mbin.grits.dev avatar

It's pure magic

essteeyou,

Just so you know, you’ve got me reading Wind, Sand and Stars now. Thanks!

mozz,
@mozz@mbin.grits.dev avatar

😃

It’s so good

niktemadur,

Well that is some spectacular prose, I am truly transported to a place where spirituality and science meet at a single point of grand mystery and realization that I have felt a few times in real life, alone in nature at surprising places and odd hours, but Saint-Exupéry has taken this all one further level up the rung.
To a level that my father actually lived, as an airplane pilot in Baja California back when the peninsula didn’t have a paved road, an isolated, remote place as yet mostly untouched by man.

One minor caveat, however:

a sheet spread beneath the stars can receive only star-dust

While I understand such a thoughtful writer was going for a feeling, surely with his talent he could have found a way to include windstorms, all the dust and sands they can sweep horizontally across the lands and over hills. The Rio De Oro region is in northern Morocco, surely it often gets blasted by powerful Saharan winds.
A sheet spread beneath the Moroccan sky most often receives desert-dust.

mozz,
@mozz@mbin.grits.dev avatar

I suspect it receives relatively few big rocks from anywhere else though

actual_patience, w Study: Dark matter does not exist and the universe is 27 billion years old

“Contrary to standard cosmological theories where the accelerated expansion of the universe is attributed to dark energy, our findings indicate that this expansion is due to the weakening forces of nature, not dark energy,” he continued.

So both dark matter and dark energy don’t exist?

HurlingDurling,
@HurlingDurling@lemmy.world avatar

So what did cern say they where trying to make?

Tristaniopsis, w For this dead star, 72 years is a single Earth day

That doesn’t make sense. Is it 72 years or a day?!?

Clent,

Sounds like it’s 72 orbits per Earth day.

Shit headline.

Reminds me of Facebook posts that intentionally show the wrong answer to increase engagement.

po_tay_toes,
@po_tay_toes@lemmy.sambands.net avatar

Yes.

ApathyTree, w NASA looking for 4 volunteers to spend a year living and working inside a Mars simulator
@ApathyTree@lemmy.dbzer0.com avatar

I would absolutely do this but I have health problems that would make me an unqualified subject :(

Amicitas, w NASA's Webb Depicts Staggering Structure in 19 Nearby Spiral Galaxies

These are absolutely stunning. The James Web just brings so much magic of the universe to light.

thisbenzingring, w The amazing helicopter on Mars, Ingenuity, will fly no more

Respect 07

Kolanaki, w The Cosmic Bat Nebula
!deleted6508 avatar

Whoa. It looks like a bat. Not like the horse head nebula, which looks more like a headless human to me.

ohwhatfollyisman, w Check Out the Highest-Resolution Images Ever Captured of the Sun's Entire Surface

when i read “hi-res images from The Sun”, this is not what i expected.

but this was better.

witty_username, w [Scott Manley] Why We Must Build a Massive Gravitational Wave Telescope In Space - The LISA Mission

Hullowitsscottmanleyhere

echo, w James Webb Space Telescope Finds Stunning Evidence for Alternate Theory of Gravity - The Debrief

There is no gravity… Earth just sucks…

RaymondPierreL3, w James Webb Space Telescope Finds Stunning Evidence for Alternate Theory of Gravity - The Debrief
@RaymondPierreL3@aus.social avatar

@fossilesque
MOND refuses to go away and is still a valid hypothesis not to be dismissed.

Deconceptualist,

Hypothesis, sure. But it needs to hold up to testing better than Lambda-CDM if we’re gonna call it the best hypothesis.

Idontevenknowanymore, w James Webb Space Telescope Finds Stunning Evidence for Alternate Theory of Gravity - The Debrief

I understood about 8% of that article but it’s still fascinating.

Deconceptualist,

I follow this stuff (as a non-physicist) so I understood it. It’s a pretty shallow article and mentions there there’s still evidence for the widely-accepted Lambda-CDM model. But like most coverage of MOND it declines to give good alternate explanations for specific key observations like the Bullet Cluster, gravitational lensing, and galactic outer rotational speeds.

So yeah a new observation that fits better with MOND than LCDM is certainly interesting, but it doesn’t flip the tables unless it does a better job explaining the prior phenomena too.

Idontevenknowanymore,

I understand the two theories and the difference between them, but when my brain tries to comprehend how gravity actually works I experience a comprehension failure.

Deconceptualist,

Haha, well if it’s any consolation, nobody fully understands it. That’s why we’re still looking at various theories of quantum gravity or even random gravity.

rebelsimile, w Event horizon: After photographing black holes, scientists are now making a movie

oh boy, get ready people. it starts with a movie, then it’s a debut single, then you’re buying the fanzines, the hats, the shirts. this ends in commemorative plates.

HurlingDurling,
@HurlingDurling@lemmy.world avatar

Don’t forget “the ride”

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