Astronauts don't burp in space? Share some interesting knowledge about the cold universe.

Man has a long history of exploring the universe. Even now, we have successfully put our feet on Mars and the moon, but in the vast universe, there are countless secrets waiting for us to uncover. Below, I will share some interesting knowledge about the cold universe with you. Let's have a look.

1 astronauts don't burp in space, because the gravity in space is always low and the gas in the stomach can't be separated from the liquid, so they can't burp.

The Big Dipper is not a constellation, but a constellation. The Big Dipper is actually only a small part of Ursa Major. Similarly, Orion is just a constellation of Orion;

When it is dark and there is nothing around, the temperature of the universe is about 2.7 Kelvin (-270). In fact, under normal circumstances, the temperature in space should be absolute zero (0 Kelvin), but under the influence of background radiation, the temperature rises slightly.

If an alien scientist is looking at the earth with a telescope 65 million light-years away from the earth, he will see the Cretaceous dinosaurs running around the earth, but he won't know that there are humans.

How's it going? Is this understanding of the cold universe far beyond your imagination? In fact, the universe is vast and boundless, and the secrets contained are far more than these. Isn't this the infinite charm of its attraction? what do you think?