Fact check: NASA developed a zero-gravity coffee cup.

Verdict: verified — Trust Score 90/100

The social media post accurately states that NASA developed a zero-gravity coffee cup that allows astronauts to drink coffee in space without a straw, similar to drinking on Earth. The cup utilizes surface tension and specially shaped channels, applying basic physics to manage liquids in microgravity. This information is confirmed by 5 sources.

Platform
instagram
Source author
uncover.quantum — see all fact-checks of this account
Original post
https://www.instagram.com/p/DaLcn04jzhe/?img_index=1&igsh=MWVzZDI2ZjIwbGF5ZA==
Verified on
July 1, 2026
Verification ID
UjFwzztx4E8Oz4c2Npd9Tw

Original content reviewed

Platform: INSTAGRAM Author: @uncover.quantum --- Caption/Description --- NASA developed a zero-gravity coffee cup to let astronauts drink coffee like they would on Earth, without using a straw. Instead of relying on gravity, the cup uses surface tension and specially shaped channels to guide the coffee along the rim and into the astronaut’s mouth. The design applies basic physics to solve a problem unique to drinking liquids in space. Follow @uncover.quantum for more. --- Carousel/Slides (2 items) --- Slide 1 (image): Text: NASA CREATED A COFFEE CUP DESIGN TO PREVENT SPILLS IN ZERO GRAVITY Slide 2 (video): Text: NASA NICOLE MANN 68 --- NICOLE MANN NASA SOURCE PLATFORM: unclear --- FIRE PORT HUGGIES BioServe TRACKER BioServe SOURCE PLATFORM: not a social media screenshot --- FRIDGE BioServe PUMP CONTROLS FLOW CONTROL --- BioServe --- NICOLE MANN 68 --- NASA NICOLE MANN BioServe --- NASA FRIDGE FLOW CONTROLS NICOLE MANN --- FRIDGE BioServe FRIDGE BioServe SOURCE PLATFORM: unclear --- FRIDGE Published: 2026-06-29T17:52:42.000Z ---VERIFICATION_SUMMARY--- Platform: INSTAGRAM Author: @uncover.quantum --- Caption/Description --- NASA developed a zero-gravity coffee cup to let astronauts drink coffee like they would on Earth, without using a straw. Instead of relying on gravity, the cup uses surface tension and specially shaped channels to guide the coffee along the rim and into the astronaut’s mouth. The design applies basic physics to solve a problem unique to drinking liquids in space. Follow @uncover.quantum for more. --- Visible Text/Media --- A visual representation of a zero-gravity coffee cup, possibly in use or demonstrating its design. --- Claims to Verify --- 1. NASA developed a zero-gravity coffee cup. 2. The zero-gravity coffee cup allows astronauts to drink coffee in space without using a straw, similar to how they would on Earth. 3. The cup uses surface tension and specially shaped channels to guide coffee along its rim and into an astronaut's

Claims analyzed (4)

  1. verified: NASA developed a zero-gravity coffee cup.
    NASA astronaut Donald Pettit designed the Capillary Cup, a zero-gravity cup, on the International Space Station. The project was later financed and studied by NASA, and a second version was developed by Mark Weislogel and his team at Portland State University and flight-tested by NASA.
  2. verified: The zero-gravity coffee cup allows astronauts to drink coffee in space without using a straw, similar to how they would on Earth.
    The Capillary Cup was designed to allow astronauts to drink liquids in microgravity without a bag and straw, mimicking the experience of drinking on Earth. Astronauts have reported that it feels "eerily like drinking on Earth."
  3. verified: The cup uses surface tension and specially shaped channels to guide coffee along its rim and into an astronaut’s mouth.
    The zero-gravity cup, also known as the Capillary Cup, utilizes capillary flow (driven by surface tension) and a specially shaped design with an angled channel to guide liquid along the rim and into the drinker's mouth.
  4. verified: The design of the cup applies basic physics to solve the problem of drinking liquids in space.
    The cup's design is entirely informed by the physics needed to keep liquid inside in microgravity, specifically using capillary flow and surface tension. This addresses the challenge of liquids floating away in space.

Sources consulted (13)

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