astronomy

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A_A, in ‘It’s amazing’: scientists analyse 4.6bn-year-old dark dust from Bennu asteroid
@A_A@lemmy.world avatar

“It’s amazing. It’s like a little treasure trove that takes us back to the start of the solar system,” said Dr Ashley King, a planetary scientist who will work on the grains at the museum. “I can’t wait to get my hands on them and see what we can learn about the early solar system.”

… are ecstatic because they discovered …
well, nothing yet.

throws_lemy, in Mars Needs Insects
@throws_lemy@lemmy.nz avatar

It’s reminds me of bugs from planet Klendathu

instamat, in Inside NASA’s bid to make spacecraft as small as possible

Put astronauts in an iron man suit and fire them from a cannon.

Pizza_Rat, in Mars Needs Insects

That’s neat!

GummySquirrel, in Mars Needs Insects
@GummySquirrel@startrek.website avatar

Because humans introducing species to new environments always goes well 😩

Coldgoron, in Mars Needs Insects

So desert plant life plus desert bugs equals terraforming capable species?

zepheriths, in Mars Needs Insects

… I think more importantly mars needs oxygen

otter, in Hydrogen discovered in Apollo-era moon rocks could change the future of lunar exploration
@otter@lemmy.ca avatar

This was a video I saw some time ago about the potential for a moon base

How We Could Build a Moon Base - Kurzgesagt

rah, in Spiral galaxies like the Milky Way are surprisingly rare. Astronomers may finally know why.

Downvoted for click-bait title.

homesweethomeMrL, in Spiral galaxies like the Milky Way are surprisingly rare. Astronomers may finally know why.

A computer simulation says spiral galaxies on a plane bang into each other and result in more elliptical galaxies. Ours hasn’t banged into anyone else yet, that the computer simulation knows about.

bdx2023,

… So that infamous impending collision with Andromeda will take our spirals away?!

(Impending in a cosmological sense, so several million years at least IIRC)

Trabic,

Thousands of millions of years I think, and continuing for at least hundreds of millions before the bouncing stops

media.giphy.com/media/…/giphy.gif

Kata1yst,
@Kata1yst@kbin.social avatar

Actually our galaxy has had at least 1 other collision according to our current understanding.

https://www.wired.com/story/this-galactic-collision-shaped-the-history-of-the-milky-way/

But our spiral likely formed after.

Shdwdrgn, in Scientists detect a cosmic ray that’s almost as powerful as the ‘Oh-My-God’ particle | CNN

The described impact of one of those particles got me thinking… I wonder how many “ghostly” encounters have been recorded in history that could be attributed to one of these particles actually hitting someone? I’ve seen several things on TV where the recorded sensation was like being punched in the gut, or ‘god’ tapping someone on the shoulder and driving them forward. However I’m a bit confused from the article – I’m not sure if this particle would travel right through you since it’s subatomic, or if it would actually feel like something hit you. Still, it’s fun to ponder.

aBundleOfFerrets,

These particles split into a crap ton of lower energy ones when they hit the edge of the atmosphere, nothing that makes it to humans has enough energy to be felt, even if they interact with you. (they probably won’t)

Zaphod,

I’ve seen a Veritasium video about this where he said you can see flashes of light if these particles hit your retinas while your eyes are closed.
Apparently astronauts experience this a lot

Claidheamh,

They do, because there is very little atmosphere to shield them from it.

Shdwdrgn,

Ah well, it would have been an interesting explanation for ghost stories.

Ranvier, in Enormous 'sunspot archipelago' 15 times wider than Earth could soon bombard us with solar flares

Preferably powerful enough to make make some nice northern lights, but not so powerful it fries the electric grid and take us all back to the stone age

frokie,

Shame

overzeetop, in Enormous 'sunspot archipelago' 15 times wider than Earth could soon bombard us with solar flares
@overzeetop@lemmy.world avatar

Any chance there’s a link to the content that isn’t an absolute cancer of a website? Id like to repost, but…yikes.

stoy, in Enormous 'sunspot archipelago' 15 times wider than Earth could soon bombard us with solar flares

A new Kerrington event would be a real bummer.

Darkncoldbard,

Carrington*

undeffeined,

Paddington*

Agent641,

We need a carrington event that will delete the bitcoin blockchain and all those fucking ape pictures

mateomaui, in Enormous 'sunspot archipelago' 15 times wider than Earth could soon bombard us with solar flares

Interesting related video from yesterday

youtu.be/6EbuAEagQj4

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