The item is then placed in a vacuum chamber, which lowers the pressure around the food. When heat is added at that low pressure, the water content within the food sublimates, or transforms directly to a gas. That water vapor is sucked out of the chamber, and the process repeats, Smiths says, anywhere from 20 to times. At the end, more than 99 percent of the water has been removed.
At the beginning, Smith says, the company would freeze-dry gallon buckets of ice cream, and then chip out portions to wrap individually and sell. Later, they found a supplier of sliced Neapolitan ice cream. Today, they sell ice cream sandwiches, still in the classic Neapolitan flavor combination.
Do astronauts really eat this? How do you make it? Astronaut Foods now also sells additional freeze-dried treats, including fruits and yogurt, and in , the company planned to add to its line Astrodog, a freeze-dried treat for pets. But the company also continues to sell an even wider range of freeze-dried foods through its other divisions to its core market of backpackers and campers, using the techniques popularized and improved by NASA, says Smith.
One of their best-selling items? Freeze-dried fettucine Alfredo. Of course, noodle integrity is only one of the benefits of freeze-drying, Smith emphasizes.
Compared to traditional dehydration techniques, which can extract as much as 92 or 96 percent of water content, freeze-drying gets out more than 99 percent of the water, which leaves a lighter product. Just as important is what it leaves behind. Here U. Unlike during early missions, the International Space Station is equipped with a freezer, an oven, a microwave, and other tools to store and prepare fresh food. Find a friend or family member to help you check out the following activities: All over the world, children of different cultures and nationalities stare at the sky and WONDER.
Their imaginations are as limitless as the universe itself. Outer space gives families the perfect opportunity to explore the world beyond Earth. Ready for an up-close look at astronaut food?
What do you think? Does the food look good to you? Would you be willing to give up some of your favorite foods for a short while for the chance to go to outer space? As you sit down for your next meal with your family, talk about how your meal is different from what astronauts eat. Would your meal taste different in space? Would what you're eating be easy or hard to eat in space? Have fun comparing your dinner table to an astronaut's food tray!
Want to dive deeper into what astronauts do in space? Read about the International Space Station. Then, share the most interesting facts you learned with a friend or family member.
Did you get it? Test your knowledge. Wonder Words packaging aluminum dehydrated absorbs nutritious digestive bacteria probiotic refrigerated Take the Wonder Word Challenge. Join the Discussion.
J May 26, The information is not accurate. There is gravity in space. Rozie Aug 28, Hi This is kinda strange but that person is right.. Sep 3, Hi Rozie. We have this Wonder on our list to spruce up. Thanks for commenting! May 29, Katie May 22, Didn't the space shuttle endeavour already fly and come back? Did they learn anything from the food experiment? Daisy May 10, This site is on the verge of helping, but not at all. May 10, In my class at school we are learning about mars.
May 9, Hey, colton! Renee Mar 3, I just want to ask, who wrote this article and when was it created? I have an essay I'd like to write and it would be great if I could know the author and date :. Renee Apr 9, Apr 10, Mar 4, Hi, Renee. Mia Feb 14, Dec 10, If you could choose, which flavor of space ice cream would you want to try? Maya Dec 17, Harrison Nov 1, I wonder if space food is comercially produced? I really want some of the Space Ice Cream!
Nov 7, Kate Oct 1, Hey, I was wondering who wrote this and when it was published for a school project. By the way, I loved your piece. Oct 10, Angus May 8, What do astronauts eat in space. Do they eat sausages? May 14, How do humans overcome the challenges of living in space? Apr 18, Mar 15, Mackenzie Jan 9, This was such an interesting article I love space and I wanted to read something about space. Jan 9, Reagan Mrs.
Thompsons' Class Dec 13, Dec 18, Jace Oct 11, Studies show that they have no evidence that they ate it according to the astronauts in space. Oct 16, Aug 30, Hi, thefakewonderopolis! Jul 7, Good guess! What did you find out after reading the article?
Jun 13, Lily Li May 25, Julie Apr 12, This wasn't helpful!!!!!!!!!!!! I need a list!!!!!!!!!!!!!!!!! Apr 13, Lokesh Dec 2, Dec 9, Sure, Lokesh!
What part of this Wonder do you need help with? May 18, Wade Mar 23, I wonder how the dehidrated food tastes like in space is it cold,Mushy,tasteless what do you think? Mar 23, Dani Jan 26, Jan 26, What's up, Dani? What did you like about this Wonder? Jan 10, Nov 25, Hey there, teh squad! Mia Oct 20, How do astrountants get freeze dry food in the special chamber? Oct 22, Mouse May 12, How much fuel does a space ship need to get to the moon?
May 16, Apr 30, Apr 28, Apr 25, May 11, Thanks for visiting! Hi, Lexie! Visit again soon! Nathan A. Apr 19, Apr 21, Astronauts open the food packages with scissors and eat with a knife, fork and spoon.
Each shuttle packs enough food to last the length of the mission, and then some. A Safe Haven food system provides every astronaut with an extra three weeks' worth of food -- 2, extra calories a day -- just in case the crew encounters an emergency. These foods are typically dehydrated for a longer shelf life. Astronauts may have plenty of food to eat, but being in space can put a damper on their appetites.
Without gravity, food aromas waft away before they make it to the nose. When you can't smell food very well, you can't really taste it, either. And because fluids tend to rise to the top half of astronauts' bodies, the crew members usually have perpetually stuffy noses.
Salt , pepper, ketchup, mustard and mayonnaise are available to enhance the flavor of the food, but even then, the condiments are different from their terrestrial counterparts -- salt and pepper have to be suspended in liquid so the particles don't float away.
So astronauts are able to eat fairly normal food with the aid of several contraptions and packaging tricks. But what happens when they spill or a rogue, floating meatball makes contact with their space suits? Go to the next section to find out. Living in the cramped quarters of the space shuttle or the International Space Station for weeks or even months at a time can get stinky if astronauts aren't careful about their personal hygiene.
Dirty living can spread germs -- which actually multiply faster in space -- and can make the astronauts sick. Yet, washing up in space can be a challenge. To keep clean, shuttle astronauts bring along a personal hygiene kit that includes a toothbrush, toothpaste, dental floss, comb, razor and other items. Astronauts take showers in a big cylinder that is enclosed by a plastic sleeve to prevent the water from floating away. They spray themselves with water from a nozzle to rinse off, and then use a vacuum hose attachment to suck up all the water from their skin.
To wash their hair, they use a rinseless shampoo. Astronauts change their shirts, socks and underwear every two days, and their pants once a week.
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