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belovedapollo · 2 days

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child of the universe, lost in space and time, only a fragment of light, made of stardust ⭐️ reblog is ok, don’t repost/use

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mysticstronomy · 3 days

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HOW DID THE MOON FORM??

Blog#392

Saturday, April 13th, 2024.

Welcome back,

There used to be a number of theories about how the Moon was made and it was one of the aims of the Apollo program to figure out how we got to have our Moon,' says Sara.

Prior to the Apollo mission research there were three theories about how the Moon formed. The evidence returned from these missions gave us today's most widely accepted theory.

Capture theory suggests that the Moon was a wandering body (like an asteroid) that formed elsewhere in the solar system and was captured by Earth's gravity as it passed nearby.

The accretion hypothesis proposes that the Moon was created along with Earth at its formation.

The fission theory suggests Earth had been spinning so fast that some material broke away and began to orbit the planet.

The giant-impact theory is most widely accepted today. This proposes that the Moon formed during a collision between the Earth and another small planet, about the size of the planet Mars. The debris from this impact collected in an orbit around Earth to form the Moon.

The Apollo missions brought back over a third of a tonne of rock and soil from the Moon. This provided some clues on how the Moon may have formed.

'When the Apollo rocks came back, they showed that the Earth and the Moon have some remarkable chemical and isotopic similarities, suggesting that they have a linked history,' says Sara.

'If the Moon had been created elsewhere and was captured by the Earth's gravity we would expect its composition to be very different from the Earth's.

'If the Moon was created at the same time, or broke off the Earth, then we would expect the type and proportion of minerals on the Moon to be the same as on Earth. But they are slightly different.'

The minerals on the Moon contain less water than similar terrestrial rocks. The Moon is rich in material that forms quickly at a high temperature.

'In the seventies and eighties there was a lot of debate which led to an almost universal acceptance of the giant impact model.'

Lunar meteorites are also an important source of data for studying the origins of the Moon.

'In some ways meteorites can tell us more about the Moon than Apollo samples because meteorites come from all over the surface of the Moon,' adds Sara, 'while Apollo samples come from just one place near the equator on the near side of the Moon.'

Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet).

The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.

During this massive collision, nearly all of Earth and Theia melted and reformed as one body, with a small part of the new mass spinning off to become the Moon as we know it.

Scientists have experimented with modelling the impact, changing the size of Theia to test what happens at different sizes and impact angles, trying to get the nearest possible match.

'People are now tending to gravitate towards the idea that early Earth and Theia were made of almost exactly the same materials to begin with, as they were within the same neighbourhood as the solar system was forming,' explains Sara.

'If the two bodies had come from the same place and were made of similar stuff to begin with, this would also explain how similar their composition is.'

Originally published on https://www.nhm.ac.uk

COMING UP!!

(Wednesday, April 17th, 2024)

"IS TIME AN ILLUSION??"

#astronomy #outer space #alternate universe #astrophysics #universe #spacecraft #white universe #space #parallel universe #astrophotography

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8infinite-space8 · 2 days

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Large Magellanic Cloud.

Credit: ESA/Hubble & NASA.

#space #science #nature #astronomy #Universe #Cosmos #Astrophotography #NASA #astro community #outer space #astrophysics #cosmology #hubble space telescope

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theofficialastronomy101 · 1 day

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g-h-o-s-t-2000 · 1 day

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this is not a dream

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tanoraqui · 2 days

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What part of Texas did you go to see the eclipse? It was very overcast in my part of Texas, so I’m just curious.

Dallas! It was partly cloudy all day, so my friend and I were sitting on our towel, yelling at the clouds to get out of the way...and they listened! Well enough, at least. Here's some pics taken over the course of about 5 minutes of totality!

#Treva does real life #outer space #holidays

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irondadfics · 8 hours

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trying to find a fic where peter and tony survive the snap and survive in space for the time skip. it was titled something like guide to survive space or something. one of the big quotes was “you’ll find it out there, eventually” it was my all time fave fic on ao3 and i can’t find it

here you go! Enjoy!

Survivor's Guide to The Galaxy by fanfic1892

Space rock crunched under Peter’s armor-clad feet and he dropped his hand from his eyes, turning to Tony. "Mister Stark," he said softly. "What do we do now?” The question was entirely reasonable, Tony supposed, but being the one expected to answer it was like an infinity gauntlet punch to the gut. (Now there was a unit of measurement he could submit to the CGPM.) Or: In a billion-to-one cosmic fluke, Tony and Peter both survive the snap and are left alone on Titan with an alien spaceship and no plan in sight. Peter’s presence brings Tony to make a tough call: diverting their course away from Earth in search of food and fuel. With the galaxy in shambles and no clear route home, the two survivors must carve out a path of their own somewhere in the great infinity.

#foundfic #hurt/comfort #peter survives the snap #outer space

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holistichealingg · 21 hours

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lemonsharks · 4 months

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Art side of Tumblr please illustrate this little guy getting into situations

#id in alt text #outer space #nasa breaking news #slow news cycle #current events

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stavee · 1 year

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I feel like nobody on Tumblr knows that the international space station is being discontinued.

Did you know that? In less than a decade it will be gone

CNN Link from above screenshot

More detailed article by Space.com

#space #iss #international space station #nasa #roscosmos #space exploration #outer space #nasa missions #i did not mean to depress everyone im sorry

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rainbow-gend3r · 9 months

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Sputnik 2, launched on November 3, 1957, carried the dog Laika, the first living creature to be shot into space and orbit Earth. Laika was a stray dog found on the streets of Moscow. There were no plans to return her to Earth, and she lived only a few hours in orbit. …

taken from @gallivantsofgillis on tiktok

#laika #laika the space dog #outer space #tw animal death #history #space history

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aspaceinthecosmos · 1 year

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ohhhh my god webb got an image of the pillars of creation and it’s absolutely STUNNING.