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NASA

Chinese Scientists 'Teleport' an Object Into Space

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NASA

It's no Harry-Potter-style apparition, but we're still impressed: Researchers in China have found a way to transmit particles from the ground to a satellite orbiting more than 300 miles above the planet. They described the process in a new paper shared on the preprint server arXiv. 

When we think about teleportation, we often think of the fantastic or futuristic plot device in which a person vanishes in one place and reappears, fully formed, in another. Quantum teleportation is sort of like that. But instead of sending a whole, solid person, quantum teleportation sends information about a quantum particle—such complete information that a new version of the particle can be created on the other end.

The process relies on what's known as quantum entanglement. That's when two particles are connected by a bond so strong that altering one particle will alter the other, even when those particles are separated by inches, or oceans, or space. It's a phenomenon so strange that Albert Einstein called it "spooky action at a distance."

Scientists have been tapping into this spooky action for some time now, transmitting photons and other particles (or their informational essence, anyway) from Point A to Point B. But until now, Point B has always been here, on Earth.

The Micius satellite, named for a 4th-century BCE Chinese philosopher, was launched from the desert sands of the Gobi in 2016. Aboard the satellite, which runs only at night, researchers had tucked a receiving device. If it worked, the receiver would transform the satellite into a very special Point B.

Researchers set up Point A at a ground station in Tibet and spent a month trying to get their photons to teleport. They made millions of attempts and succeeded not once, but more than 900 times. Instruments aboard Micius recorded the appearance of new photon after new photon.

While this success may not get us closer toward wizarding-style transportation, it's a huge leap forward in the ability to rapidly transmit information.

"This work establishes the first ground-to-satellite up-link for faithful and ultra-long-distance quantum teleportation, an essential step toward global-scale quantum internet," the scientists write in their paper.

In other words: One day, we might be complaining because our quantum internet is too slow. Stranger things have happened.

[h/t The Independent]

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Space
The Fascinating Device Astronauts Use to Weigh Themselves in Space

Most every scale on Earth, from the kind bakers use to measure ingredients to those doctors use to weigh patients, depends on gravity to function. Weight, after all, is just the mass of an object times the acceleration of gravity that’s pushing it toward Earth. That means astronauts have to use unconventional tools when recording changes to their bodies in space, as SciShow explains in the video below.

While weight as we know it technically doesn’t exist in zero-gravity conditions, mass does. Living in space can have drastic effects on a person’s body, and measuring mass is one way to keep track of these changes.

In place of a scale, NASA astronauts use something called a Space Linear Acceleration Mass Measurement Device (SLAMMD) to “weigh” themselves. Once they mount the pogo stick-like contraption it moves them a meter using a built-in spring. Heavier passengers take longer to drag, while a SLAMMD with no passenger at all takes the least time to move. Using the amount of time it takes to cover a meter, the machine can calculate the mass of the person riding it.

Measuring weight isn’t the only everyday activity that’s complicated in space. Astronauts have been forced to develop clever ways to brush their teeth, clip their nails, and even sleep without gravity.

[h/t SciShow]

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Watch Astronauts Assemble Pizza in Space
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iStock

Most everyone enjoys a good pizza party: Even astronauts living aboard the International Space Station.

As this video from NASA shows, assembling pizza in zero gravity is not only possible, it also has delicious results. The inspiration for the pizza feast came from Paolo Nespoli, an Italian astronaut who was craving one of his home country’s national dishes while working on the ISS. NASA’s program manager for the space station, Kirk Shireman, sympathized with his colleague and ordered pizzas to be delivered to the station.

NASA took a little longer responding to the request than your typical corner pizzeria might. The pizzas were delivered via the Orbital ATK capsule, and once they arrived, the ingredients had to be assembled by hand. The components didn’t differ too much from regular pizzas on Earth: Flatbread, tomato sauce, and cheese served as the base, and pepperoni, pesto, olives, and anchovy paste made up the toppings. Before heating them up, the astronauts had some fun with their creations, twirling them around like "flying saucers of the edible kind,” according to astronaut Randy Bresnik.

In case the pizza party wasn’t already a success, it also coincided with movie night on the International Space Station.

[h/t KHQ Q6]

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