Hank Green Profile picture
Jul 11, 2022 11 tweets 4 min read Read on X
As you may have heard The James Webb Space Telescope will be releasing "data from its first five targets" on Tuesday. I'm no astronomer but here's what I've gathered about what that means, and what we'll see.
Four of the five sets of data will come in the form of pictures of our universe that will give us both resolution and wavelengths we've never seen before.

Resolution means...just more pixels per unit of sky.

Wavelengths means kinds of light that we haven't been able to see.
The other data set will be the spectrum of the atmosphere of WASP-96b, a gas giant about half the size of Jupiter that's around 1000 light years away. Webb promises to be by far our best tool for getting data on the atmospheres of exoplanets, which will be a tremendous win.
As for the four images...here are our targets. Three of these are going to be absolutely stunningly beautiful visually, the other one is going to be the kind of picture that nestles into your mind and creates a weight that will never leave you. ImageImageImageImage
This is the Southern Ring Nebula. It's a planetary nebula...gas thrown off by a red giant at the end of its life. This is a well-studied nebula, which is always a good early target as it will allow scientists to see now new data fits into the old. Image
Second we have the Carina Nebula, a different sort of nebula...a cloud of gas and dust giving birth to NEW stars. It's one of the largest nebulas in the sky and it contains a variety of stars at different stages of formation. It's also just VERY CHARISMATIC. ImageImage
Zooming way out, this is Stephan's Quintet...five galaxies packed so close together you'd think they were photoshopped. Two of these galaxies are actively colliding! Again, a well-studied patch of the sky that contains TONS of opportunities for new insight. Image
And then last, proof that they're JUST GOING FOR IT, it's SMACS 0723. We started quite close, just 1000 light years away, now we are going to look, oh, y'know, 13 or 14 BILLION light years away. And the way we are doing it is MADNESS. Image
The promise of Webb has always been to see farther away (and thus farther back in time) than we have ever seen, and that's what this is about. SMACS 0723 is a galaxy cluster so massive that light /bends/ around it. And what is a telescope but a tool for bending light?
This gravitation distortion allows us to use this galaxy cluster as a lens. In effect, we are pointing the world's best man-made telescope at the universe's best natural telescope.

We're going to see what's on the other side of that, which is, very nearly...the beginning.
So, get hyped. This is one of the coolest things humanity has ever done and the mission is just getting started.

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More from @hankgreen

Aug 17, 2024
People ask why I still call this website Twitter and why I still call these things Tweets, so here's the "Hank Green Style Guide on Twitter and X."
If a billionaire took over my city's government and said "Your City is Now Called X" I would say, "That's silly, my city is called Missoula. I live here and it's called whatever I call it...but I'm happy to call the government "X" because that's the thing you actually took over.
As a result, it feels correct to me to say that Twitter is this place but that Twitter is owned and operated by X. So X creates the policies and runs Twitter, but it's still Twitter, because calling this place "X" seems silly when it is obviously Twitter.
Read 7 tweets
Jul 20, 2024
Wild stuff going on in Montana right now. Lemme tell you about it.

One of our senators is a guy named Jon Tester who grew up outside of a town called Big Sandy on land that his grandfather homesteaded in 1912.
He has worked his family farm almost his entire life, including the 10 years he’s been in the Senate.

But he started his political career with ten years on the Big Sandy school board.
When the state senator from his district, a Republican, decided not to run for reelection, he ran for that office and won. He served the full two terms (we have term limits for state senate) during which time he was elected president of the senate. As a democrat. In /Montana/.
Read 12 tweets
Apr 27, 2024
Can we...just accept that we suck at this?

I want to tell you a story that has made me kinda hopeless about Twitter's ability to affect positive things happening, and it starts with this tweet from Hillary Clinton.

It was (and I understand why) widely mocked. The graph is confusing and bad, especially the part where it flattens out in 2030 (which is when most of the provisions of the Inflation Reduction Act, the largest climate change bill in the history of Earth, expires.)
Some of the people making fun of the tweet were like "How do I vote for Target" which is a good joke. But the majority of the popular tweets about it were like "This is the problem with Democrats, they will only ever be just a little better than Republicans."
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Read 26 tweets
Feb 26, 2024
FYI Charlotte the stingray is not pregnant with shark rays (unfortunately impossible) but she is also not pregnant with clones of herself (also impossible) it's much weirder than that.
Charlotte the stingray procreates sexually, which means she isn't set up to create clones. Her egg cells have half of her genome with a random mix of genes from her father and mother.

Usually that would get fertilized with sperm with half of another stingray's genome.
Charlotte can't just not use an egg cell to make babies. She has to. So an evolutionary hack developed where some animals can fertlize their own eggs. In the case of sharks and rays, this is done with a by product of meiosis called a "polar body" that is usually discarded.
Read 8 tweets
Jan 1, 2024
It’s Katherine’s only content of the year! NYE Dubsmashes Incoming!
Read 4 tweets
Nov 14, 2023
Here's the story of how I kinda bought 10% of an amazing new word game...for charity.

A few months ago, I saw a TikTok about a word game called "Gubbins" that was being produced by a small indie game studio in Australia (@folly_studio) and I messaged the people creating it. Image
I got early access to the game and absolutely loved it. It's fun, simple, fast, clever, and most of all ABSOLUTELY DELIGHTFUL. It's just a little piece of art that is part of my daily life now. Image
We got on the phone and they talked about how FREAKING HARD it is to do anything interesting in the mobile game space and how they were having a difficult financial time making it to the finish line.

I made a weird proposal... Image
Read 6 tweets

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