Source | I suspect this was not taken in the environment of the space station. A foreign netizen said that
objects should be weightless in space.
However, when teaching in space on the China Space Station, the water is still the same as on the ground.
The water in the cup is stable.
Some foreign netizens are even "big enough" to start "conspiracy theories" and doubt whether China has launched a space station at all. The "Tiangong " is just a "prop" filmed on the ground.
@Our Space responded: Science is not that mysterious.
Related topics also sparked heated discussion on Zhihu .
Yesterday (June 30) at noon
China Aerospace Science Popularization Official Account
@Our Space responded on Zhihu:
In fact, science is not that mysterious.
A picture and two sentences can explain it clearly.
The first sentence, This is indeed a screenshot of the opening video of the Shenzhou 13 crew's second space lecture. The water cup is ordinary. The water cup contains drinking water, which our astronauts carefully poured into the water cup. This water cup and water are the backup teaching aids for the second space lecture .
The second sentence, The water in this water cup is not used by astronauts to drink directly. It is a teaching aid. When astronauts drink water on the space station, they all use drinking bags with drinking spouts with one-way valve structures. Drinking water bag, you cannot pick up the cup and drink directly! ! Otherwise it will be dangerous!
Astronaut Liu Boming drinks water in space
Astronaut Wang Yaping and Ye Guangfu conduct microbial testing in drinking water
The following animated picture is the Shenzhou 13 crew's first space lesson on table tennis water levitation. From the picture, you can It can be seen that when the astronauts carefully pour water into the container, due to the effect of surface tension , the water will not float, and the ping pong ball in the water will not float, but will quietly remain in the container. Balanced state!
Regarding the doubts of foreign netizens
China Association for Science and Technology Science and Technology Communication Center
also said in the reply:
Is there a possibility that the surface tension of water is at work, and our Tiangong Class Lesson 1 + Lesson 2 Experiments were conducted on the tension of water. Is there a possibility that the cup is fixed on the table for the convenience of doing experiments? Is it possible that while foreign netizens are still doubting whether China has launched a space station at all, experiments surrounding the application of China's space station have already been carried out.
Do you think there is only water? Another answer from
highlighted the issue of
. This question also attracted the attention of @China Aerospace Science and Technology Group on Zhihu: The key to unlocking all sciences. There is no objection but a question mark. Only when there are doubts does it mean that it is concerned.
At the end, we didn’t forget to tell the story:
The Shenzhou 14 astronaut crew
will also have the interesting “Tiangong Classroom”
There’s more than just water!
Hurry and collect it
Such experiments
cannot be learned in class~
