Through a straw. Like a plastic takeaway milkshake cup? With a lid over the top and a hole in the middle? They have those with straws in the hole but have to drink the whole container or put some sellotape over the end of a straw to block the exit.
Astronauts eat food that has been specially prepared to avoid crumbs or liquids floating away. They can either eat it with a spoon or use utensils that have Velcro or magnets to stick to their trays. They can also drink liquids from specially designed pouches equipped with a straw.
No, Neil Armstrong did not drink Coke on the moon. During the Apollo 11 mission, astronauts ingested water, fruit juice, and other specially prepared liquids to stay hydrated.
straws
water
of course astronaut can drink herbalife
LIQUIDS
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Astronauts can eat and drink pretty much anything as long as it doesn't create crumbs (crumbs would float around and could clog the air filters). Space food is prepared on Earth and stored in sealed, re-heatable pouches. Liquids are drunk from straws or pouches. In free-fall, free liquids will collapse into spheres because of surface tension, but can be messy if the spheres are broken up. NASA has a video of a shuttle astronaut releasing a "ball" of water and then catching it in his mouth.
They eat while inside the space station or shuttle. Bars used to be positioned inside the spacesuit where the astronaut could take a bite at will, but they are no longer used as astronauts preferred to eat later. They do however have a drink bag and tube from which they can suck water. Spacewalks last up to seven hours and astronauts work hard during this time, so it is essential that they drink.
The astronauts on STS-51F used both Coca-Cola and Pepsi for the purposes of carrying out scientific experiments.
astronauts died of thirst rather than drink their own recycled water
Dehydration