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Sophia Gad-Nasr Profile picture
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25 Feb, 5 tweets, 1 min read
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It doesn't take a lot of effort to support people's right to be themselves. It does take a lot of effort to be hateful.
Every time I tweet about this my followers drop like flies. So I'm gonna lay this out:
I support freedom of gender identity
I believe Black Lives Matter
I stand against sexism and racism
I stand against Antisemitism
I stand against Islamophobia
I believe in freedom of choice
As we shift more towards inclusivity, ppl will fumble. Bad takes will need correcting. That's okay, as long as ppl are open to being better. I don't jump to cancel bc I think that prevents ppl from even WANTING to be better. And I want a better society. Let's build one together❤
To be clear, when I say "bad take" I mean opinions that are wrong but don't directly harm someone. So no, you can't just "be better" if you sexually assault someone (for example). You can be better if you thought Muslims are terrorists. And that's all I have to say on this.

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More from @Astropartigirl

Sophia Gad-Nasr Profile picture
6 Feb
Yeah dude I just HATE knowing how things work! Who the fuck CARES how the Universe will die, or that we don't understand 95% of it SO WHAT. I hate the Universe. And apparently myself since I AM a physicist who's also a woman. GASP. 🙄
Oh Saturn has a hexagon shadow going because of the physics of fluid and shit? SO WHAT. HOW BORING. (NOT)

Amazing work by the wonderful @JPMajor (oops i mean NOT amazing, I'm a woman and therefore in hate this! 🤦‍♀️)
Oh, and the Universe looks like a cosmic web because of the way that stupid boring stuff you call "dark matter" decided to orient itself and so the stuff we can see fell towards it, because of literally THE MOST BORING THING EVER: PHYSICS?! Pshhhh
(From Millennium Simulation)
Read 10 tweets
Sophia Gad-Nasr Profile picture
8 Aug 20
Just learned of cliquey exclusionary stuff going on where specific accounts were boosted for followers, and others left in the dust. Some personally hurt. I'm one of the scicommers "left in the dust", had no idea, but here are my thoughts since I'm part of "Science Twitter":
I wanted you all to know I had no idea, was not included in the group. I worked VERY hard on my following with my scicomm for years, with no luxury of a group boosting me. I DID notice accounts (that happen to be part of this fiasco) gain a significant following.
I didn't get it since I was producing great content (imo). Wondered what I was doing wrong, felt inadequate, less important. And quite frankly, worthless in Twittersphere. Didn't understand how accounts who haven't done what I have for as long as me, earned followings I did not.
Read 41 tweets
Sophia Gad-Nasr Profile picture
10 Jul 20
If you touch two CLEAN blocks of the same metal together in space, they weld!
Atoms in solid metals move a bit. Touch two clean surfaces together, and the atoms can't tell they're in different blocks so they become one group of atoms, ie ONE SOLID.
(Gif: homemadetools.net/forum/cold-wel…)
The reason it doesn't happen on Earth when you put two of the same metals together is because of oxygen, which causes metal to rust. That oxide layer sits the two metal surfaces, so atoms in each block see a layer of different atoms, and know that's their "limit" for movement.
If you're wondering if this has affected space missions, it has! The Galileo space probe sent to Jupiter couldn't deploy its high gain antenna on the way to Jupiter because the metal rods that were to open up the "umbrella" got cold welded together!
Graphic: NASA/JPL Graphic of Galileo when it failed to open its high gain ante
Read 7 tweets
Sophia Gad-Nasr Profile picture
28 May 20
"If dark matter exists, why can't we see its effects in the solar system?" is a question I'm often asked. The answer: compared to the mass of the Sun, the mass of dark matter in our solar system is far too little to affect planet orbits like it does stars in galaxies. Here's how:
The solar system is big--REALLY big--from our perspective. But it's a tiny speck on the galactic scale. We can *very roughly* say there's ~1 star per pc³ in the galaxy (1 pc = 3.26 light-years). To compare, our solar system is ~100 AU in radius, which is only about 0.0005 pc.
So our entire solar system is just a tiny speck on the galaxy! There's *way more space* between stars than you'd think. (Of course near the center of the galaxy stars are very densely packed due to gravity, and very sparse in the disk region).
Read 10 tweets
Sophia Gad-Nasr Profile picture
3 Jan 20
Lise Meitner
Vera Rubin
Jocelyn Bell Burnell
Chien-Shiung Wu
Cecilia Payne
Rosalind Franklin

The list goes on. And the Nobel Prize committee still won't admit sexism is why there have been 3 women to win in physics, and 5 in chemistry, EVER. Great start to 2020 with this one.
Of 212 Nobel Laureates in Physics (one man was awarded *twice*, btw), 3 have been women = 1.4% Nobel Laureates in Physics are women.

Of 184 Nobel Laureates in Chemistry, 5 went to women = 2.7% Nobel Laureates in Chemistry are women.

The numbers speak for themselves, friends.
And don't get me started with Vera Rubin. She literally ushered in a new era of dark matter physics. Her work was published 1976, and she lived till December 2016. That's 40 YEARS the Nobel Prize committee had to award her, and snubbed her *every single time*.
Read 18 tweets
Sophia Gad-Nasr Profile picture
1 Nov 19
Fun fact: the circumference of a circle in our spatially flat Universe is 2πr. But if our Universe was positively curved (think the surface of a sphere), it's *less than* 2πr. If negatively curved, like a saddle or pringles chip for example, it's *greater than* 2πr!
It makes sense too if you picture it: on a sphere, the circumference of a circle of the same radius as a circle on flat space will be smaller because the sphere curves inward, making the path you travel that circle to be shorter than the one on a flat sheet of paper.
Now do the same on a pringles chip: the path you travel along the circumference is *longer*. Imagine a sheet that's kinda wavy around a point, and you draw a circle around that point. that's *kinda* like negatively curved spacetime, so a circle would have a larger circumference.
Read 11 tweets

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