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by Sumeet Sahu ยท Free NCERT ยท Class VIโ€“X
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Why Can’t You Drink from a Straw on the Moon?

๐Ÿ“… August 9, 2026 โ€ข By sumeetsahu1


You would think sipping juice is easy anywhere. But on the Moon, a straw simply will not work. Here is why. ๐Ÿ‘‡

There is no air pressure on the Moon. And air pressure is the only reason a straw works at all.

Here is what actually happens

Most people think that when you drink through a straw, you pull the juice up.

That is wrong.

What you really do is remove the air from inside the straw with your mouth. Now the pressure inside the straw is low.

And outside, in the glass? Normal air pressure is still pressing down on the surface of the juice.

So who is sending the juice up? The air outside. Not your lips.

You are not pulling —
the air is pushing.

So what happens on the Moon

The Moon has almost no atmosphere. That means there is no air pressing down on the juice.

Now even if you suck all the air out of the straw, the juice stays in the glass. There is nothing to push it up.

This is why astronauts drink from sealed pouches and squeeze them — not from glasses and straws.

๐ŸŒŸ DID YOU KNOW?

This is also why a straw would fail in outer space. On Earth, the air quietly helps you with every single sip — and you never notice it.

Juice peena to kahin bhi easy hona chahiye na? Par Moon par straw kaam hi nahi karega. Kyun — wo interesting hai. ๐Ÿ‘‡

Moon par air pressure hai hi nahi. Aur straw chalta hi air pressure se hai.

Ab asli baat samjho

Zyadatar log sochte hain ki straw se peete waqt hum juice ko kheenchte hain.

Ye galat hai.

Aap actually kya karte ho — apne muh se straw ke andar ki hawa nikaal dete ho. Ab straw ke andar pressure kam ho gaya.

Aur bahar glass mein? Wahan normal air pressure abhi bhi juice ki surface par daba raha hai.

Toh juice ko upar kaun bhej raha hai? Bahar ki hawa. Aapke honth nahi.

Aap kheenchte nahi ho —
hawa dhakelti hai.

Toh Moon par kya hota

Moon par atmosphere lagbhag hai hi nahi. Matlab juice ki surface par dabaane wali koi hawa nahi.

Ab chahe aap straw se poori hawa nikaal do — juice glass mein hi pada rahega. Kuch use upar bhejne wala hai hi nahi.

Isiliye astronauts sealed pouches se peete hain aur unhe dabate hain — glass aur straw se nahi.

๐ŸŒŸ DID YOU KNOW?

Yahi wajah hai ki straw space mein bhi fail ho jaata. Earth par har sip mein hawa chupchap aapki madad kar rahi hai — aur aapko pata bhi nahi chalta.

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Why Can’t You Tickle Yourself? (Gudgudi) โ†’