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Astronauts Are Getting a Space Bakery

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While bread is currently banned on the International Space Station, it will soon make its way back into astronauts’ diets thanks to Bake in Space, a German project aimed at developing a bread maker and dough that can safely be used in microgravity, as New Scientist and Atlas Obscura report.

The culinary staple is currently banned from space missions because in space, crumbs can be dangerous. Currently, if an astronaut wants a PB&J, they have to use a tortilla.

Bake in Space hopes to develop a system that can make fresh German-style bread rolls in microgravity, giving space travelers a semblance of Earthly normalcy at dinnertime. As missions to far-flung destinations like Mars become more plausible, astronauts will need to be able to feed themselves for years on end, and being able to make a fresh loaf of bread would be a lot more pleasant for a homesick crew than exclusively eating pre-packaged space food.

Bread hasn’t always been absent from space missions. A contraband sandwich on the 1965 Gemini 3 mission caused a major incident. Astronaut John Young had surreptitiously brought a corned beef sandwich onto the flight in his spacesuit. When he took it out for a bite, little bits of rye bread began floating throughout the cabin. It didn’t cause a disaster, but the crumbs could have gotten into a crewmember’s eye or into delicate equipment in the spacecraft.

Young quickly put the sandwich back into his pocket, but he got an earful about it when he returned to Earth. The U.S. House of Representatives appropriations committee held a meeting about the incident, in part because congressmen were upset that the astronauts were smuggling food into space instead of testing out the high-tech food that had been developed especially for them.

Bread did make it back into space, but it wasn’t your average loaf. While Apollo astronauts made sandwiches and ate bite-sized cinnamon bread, the bread was coated in a layer of gelatin to prevent it from crumbling. The NASA photograph above is from the 1985 Discovery space shuttle.

Bake in Space is working with engineers, food scientists, and Earth-bound bakers to develop its space bread, which is scheduled for testing on a 2018 European Space Agency trip to the International Space Station. The company has yet to develop a recipe, though, and is still working out how it will be made. The loaves will need to balance out the need for crumble-free bread with astronauts’ understandable desire not to eat rock-hard rolls. Somehow, they’ll have to come up with a way to make a fluffy bread that will remain crumb-free.

[h/t Atlas Obscura]

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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Here's How to Change Your Name on Facebook
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Whether you want to change your legal name, adopt a new nickname, or simply reinvent your online persona, it's helpful to know the process of resetting your name on Facebook. The social media site isn't a fan of fake accounts, and as a result changing your name is a little more complicated than updating your profile picture or relationship status. Luckily, Daily Dot laid out the steps.

Start by going to the blue bar at the top of the page in desktop view and clicking the down arrow to the far right. From here, go to Settings. This should take you to the General Account Settings page. Find your name as it appears on your profile and click the Edit link to the right of it. Now, you can input your preferred first and last name, and if you’d like, your middle name.

The steps are similar in Facebook mobile. To find Settings, tap the More option in the bottom right corner. Go to Account Settings, then General, then hit your name to change it.

Whatever you type should adhere to Facebook's guidelines, which prohibit symbols, numbers, unusual capitalization, and honorifics like Mr., Ms., and Dr. Before landing on a name, make sure you’re ready to commit to it: Facebook won’t let you update it again for 60 days. If you aren’t happy with these restrictions, adding a secondary name or a name pronunciation might better suit your needs. You can do this by going to the Details About You heading under the About page of your profile.

[h/t Daily Dot]

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