Kuala Lumpur
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How to distinguish stars and planets in the night sky?

To answer this question, you need to determine whether an object is flickering or shining with a steady light. If it flickers, it's a star; if it doesn't, it's a planet.

The reason stars flicker is the Earth's atmosphere. It constantly moves: cold air goes down, warm air goes up, and its density at different heights is heterogeneous. Therefore, as it passes through the Earth's atmosphere, starlight is repeatedly scattered and refracted.

The planets do not flicker because they are much closer to us. Our eye recognizes them as luminous disks. We see their light as smooth and static.
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Operation of a wedge-air rocket engine.💥

A type of liquid rocket engine with a wedge-shaped nozzle that maintains aerodynamic efficiency over a wide range of altitudes above the Earth's surface with varying atmospheric pressures.
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Copper is non-magnetic, though it creates resistance in the presence of a strong magnetic field, causing the magnet to halt for a moment before it even touches the copper.
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It's hard to believe, but..

The DNA of all living people could fit in one teaspoon and would weigh less than 1.2 grams🧬
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The world's largest hand-held flashlight.
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BIG-DICK$-CLUB.

NASA had to change the labeling of the penis sleeve for urinating in spacesuits from "small", "medium" and "large" to "large", "giant" and "huge", because astronauts chose only large ones, and they slipped off.
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Visual animation of earthquakes recorded from 1901 to 2000

The size of the circle indicates the strength of the earthquake on the Richter scale, and the color indicates the depth of its origin.
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Bullets of different calibers hitting a steel plate, shot at 250,000 frames per second
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A vending machine in a Russian mall is for buying likes on your social media
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Water clock👆🏻😱

You can watch it all day long..
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Ink injected into a yolk sac artery of a 72-hour-old chick embryo lets you see its beating heart and pulsing veins! 💉
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@QuiteInterestingInformation