this post was submitted on 27 Feb 2025
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Science Memes

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[–] [email protected] 1 points 31 minutes ago

I bet it's hot there.

[–] [email protected] 1 points 43 minutes ago

I tried wiping the dust off my screen 😭

[–] [email protected] 2 points 2 hours ago

So conditioned that NDT is talking bullshit and people dunking on him that I had to read it a couple of times to understand it.

[–] [email protected] 4 points 3 hours ago

No, you morons! That's your thumb with the close ad X under it.

[–] [email protected] 9 points 4 hours ago (1 children)

From that picture, it looks like you'd be on mercury and look up, see nothing but sun, But realistically it's 60% closer than earth

looks kinda like this from the surface

[–] [email protected] 12 points 3 hours ago* (last edited 3 hours ago) (1 children)

Im struggling to parse this. The picture of the sun with the tiny dot when compared with the artists impression you posted. It just wont click together. How can the sun appear so big from the telescope compared to mercury but be so small from mercury's perspective?

Edit. Actually i think it clicked. Mercury is so far from us and so smalkl that it appears like a small dot through that telescope even when zoomed in enough to see the sun that closley. Its actually still really far from the sun but our perspective and that flat picture makes it seem like its about to be consumed by the sun. If it was off to the side the distance would be more clear.

So more like this

S---‐-------------------------------M--------------------------------------V----------------------------------E

Than

S---M‐---------------------------------------------------------------------V----------------------------------E

[–] [email protected] 2 points 27 minutes ago

Yep, zoom and narrow aperture really messes with perspective.

It's kind of opposite of the tilt shift photos that make real life things look fake.

[–] [email protected] 3 points 3 hours ago

I mean it would but I’ve known the scale of the universe since i still threw myself birthday parties…lol

[–] [email protected] 1 points 4 hours ago (2 children)

so is basically the whole sky sun on mercury during the day?

[–] Revan343 7 points 4 hours ago

Naw, it only looks about three times as big from Mercury. Bake you to death right quick though

[–] [email protected] 4 points 6 hours ago (1 children)

And this is why I worship the Sun

[–] [email protected] 1 points 3 hours ago

But pray to Joe Pesci, right? You pray to Joe Pesci, right?! RIGHT?

[–] [email protected] 34 points 12 hours ago (5 children)

Too autistic for this. Why would it be unsettling? Mercury is much smaller than the sun. If it was suddenly bigger in proportion to the sun, then I'd be unsettled.

[–] [email protected] 4 points 3 hours ago

Right, I feel like no astronomer should be unsettled by just a picture of our solar system.

[–] [email protected] 2 points 3 hours ago

You're not invited to my birthday party.

[–] [email protected] 49 points 11 hours ago (1 children)

It doesn't exactly unsettle me, but pondering the mind-boggling scale of celestial bodies and the cosmos can certainly be... humbling, I guess?

I had a co-worker a while back who couldn't talk about the great scale of the universe cause he'd get freaked out. It didn't come up much, but when it did, he'd be like, "Please stop, it's stressing me out" so we'd change the subject.

[–] [email protected] 1 points 47 minutes ago

That guy goes to so many birthday parties

[–] [email protected] 17 points 11 hours ago* (last edited 11 hours ago) (2 children)

Less about size and more about size and relative distance. Think about being on Mercury and the entire sky is blazing sun - and yet it survives.

[–] [email protected] 3 points 7 hours ago (1 children)

I mean, nothing on Mercury survives. At night it's -170 degrees Celsius and +430 degrees at day.

[–] [email protected] 2 points 1 hour ago

There was a time people thought Mercury would have some "twilight" acreage that was always at habitable temperatures. Then we learned that, while yes it is tidally locked with the Sun, it is locked in a 3:2 resonance so it does rotate with respect to the sun, and everywhere gets both scorched and frozen to uninhabitability.

[–] [email protected] 5 points 9 hours ago (1 children)

on Mercury and the entire sky is blazing sun

I've never thought about this and holy shit

[–] [email protected] 9 points 8 hours ago* (last edited 8 hours ago)

That's not the case though. Sure the sun would seem bigger on mercury but it's not gonna fill the entire sky.

Edit: According to NASA the sun would appear 3 times bigger and 7 times brighter on mercury.

[–] [email protected] 10 points 11 hours ago

It's very hard to convey the size of the sun in a photo. On earth, it isn't bigger than the moon. I don't think I've ever seen, in a real photo, just how massive the sun is. I absolutely dwarfs a planet, which is kind of chilling. I've never seen a photo that shows anything further away from the camera than a planet AND that much bigger.

[–] [email protected] 17 points 10 hours ago (3 children)

Looks like a dead pixel.

The scale of the universe continues to blow my mind.

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[–] [email protected] 96 points 14 hours ago* (last edited 14 hours ago) (3 children)

This small circle is the sun, absolutely dwarfed by the earth taking up the rest of the frame. Definitely unsettling.

[–] [email protected] 51 points 14 hours ago* (last edited 14 hours ago) (1 children)

You shouldn't stare too long at this photo with your naked eye or you'll go blind.

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[–] [email protected] 73 points 14 hours ago (3 children)

Ackchually, that's just a photography of mercury, not the actual planet on your screen.

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[–] [email protected] 11 points 10 hours ago (2 children)

This reminds me of that part of that space opera I read where there was a nomadic colony on mercury which needed to always be moving at exactly the right speed to stay on the dark side of the terminator.

[–] [email protected] 11 points 10 hours ago (2 children)

Wow. I was in middle school and had to do a creative writing assignment, and I wrote a science fiction short story set in a colony on that boundary of Mercury. I thought Mercury was tidal locked. I was praised for my creativity.

I was today years old when I found that Mercury is not tidal locked.

[–] [email protected] 2 points 1 hour ago

The 3:2 resonance Klear references is considered a type of tidal locking.

[–] [email protected] 4 points 3 hours ago

Same here. I was so going to ackchyually that guy, but I did a quick check before and turns out there is a day/night cycle.

Apparently one Mercury day takes exactly two Mercury years due to some fuckery involving "3:2 spin-orbit resonance" which is something I'm too drunk to comprehend right now.

Gonna be an interesting wikipedia binge at work tomorrow tho

[–] [email protected] 10 points 10 hours ago (2 children)

That was in the Red / Green / Blue mars trilogy, one of my favorites. Though I think I've seen the concept in other works as well.

Basically the temp difference between day / night caused contraction of the rail tracks, pushing the whole city forward so it was always just ahead of dawn.

[–] dubyakay 3 points 7 hours ago (1 children)

The nomadic colony got expanded on in KSR's novel 2312. I don't actually remember much about it in the Mars Trilogy.

But I've seen the concept before in an old EU Star Wars novel, one of the Solo books maybe, where Lando was operating something similar as his new venture.

And before that maybe mentioned by Sagan. And before that...

[–] [email protected] 2 points 3 hours ago (1 children)

I'll have to get 2312, haven't heard of that one. Same universe?

[–] dubyakay 3 points 3 hours ago* (last edited 3 hours ago)

Adjacent, probably. Very similar, and seems to purposefully be set a hundred years after Blue Mars ends (2212).

But it starts and ends on Mercury after a voyage through the solar system, not spending much story time on Mars.

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[–] [email protected] 53 points 14 hours ago (3 children)

Ironically mercury while being the closest planet to the sun, isn't the hottest planet in the solar system. Venus takes that title because of its atmosphere holding so much co2. Im sure its fine were putting so much of it in our atmosphere.

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[–] [email protected] 22 points 13 hours ago (3 children)

Mercury is like 30-50 sun's diameters away from the sun. This perspective makes it look like it's almost touching.

Size scale matches though

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[–] [email protected] 5 points 9 hours ago (1 children)
[–] [email protected] 1 points 3 hours ago* (last edited 3 hours ago)

Screenshot from Rick and Morty S6E9 Bring forth the shears of stumping!

[–] [email protected] 10 points 11 hours ago (1 children)

I guess because of perspective, Mercury being millions of miles closer to the camera than it is to the sun, the actual proportions would have the planet being much smaller by comparison

[–] [email protected] 10 points 11 hours ago (1 children)

Mercury's apparent size in the sky when close to us is about twice the size as when mercury is in the other side of the sun from us. So mercury would appear about 75% the size it is in this photo of it were next to the sun (so about the same distance away as the sun is).

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