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    Once The World's Largest 'Eye In The Sky', It Sent Telegrams To Aliens, Now It's a Dumping Ground

    Jul 19, 2025
    Jul 19, 2025

    The Arecibo Radio Telescope in the United States used to be the largest radio telescope in the world, with a diameter of 350 meters. As the most powerful radio telescope ever built, scientists have achieved many scientific results with the radio Arecibo radio telescope in the past decades

  • Science

    There Have Been Ways To Create Artificial Gravity For a Long Time, So Why Isn't Artificial Gravity Used On Space Stations?

    Jul 18, 2025
    Jul 18, 2025

    If we make the space station in space into a ring and let it rotate, then the humans in it will also feel the "centrifugal force" to "push" themselves towards the outer wall of the space station

  • Science

    If The Earth Shrank To The Size Of An Electron, How Big Would The Universe Be?

    Jul 17, 2025
    Jul 17, 2025

    A rigorous discussion of the unknown is not possible, so it is necessary to narrow down the universe we are discussing to only the universe we can see

  • Science

    Life May Not Have Originated On Earth, And There Is Growing Evidence That Life Should Have Originated In Outer Space

    Jul 16, 2025
    Jul 16, 2025

    In the past days, scientists have been working on the study of meteorites, and as the research continues, there is more and more evidence that life should originate from outer space

  • Science

    How Fast Is Mach 1? How Many Kilometres Per Hour Is It Equivalent To?

    Jul 15, 2025
    Jul 15, 2025

    In essence, sound is actually a wave generated by the vibration of the object, the sound waves in the air is actually a "longitudinal wave"

  • Science

    What Is The End Point Of The Evolution Of Carbon-Based Life? How Far Away Is Humanity From This Endpoint?

    Jul 14, 2025
    Jul 14, 2025

    Theoretically, life can take many different forms, such as silicon-based life, sulphur-based life, carbon-based life, amino-life, hydrogen-based life, etc. However, so far we only know that life exists on earth, and all known life, including us humans, is carbon-based.

  • Science

    What Are The Celestial Bodies That We See In The Night Sky? How Far Away Are They From Us?

    Jul 13, 2025
    Jul 13, 2025

    In a good night sky, we can always see a sky full of stars and it seems to us that the whole universe is in full view. In fact, the stars we see in the night sky are only a tiny part of the milky way galaxy, which is just one of the trillions of galaxies that exist in the observable universe.

  • Science

    Japanese Scientists Have Stored 50,000 Tonnes Of Ultra-Pure Water Underground.

    Jul 12, 2025
    Jul 12, 2025

    Although ultra-pure water does not exist in nature, humans can prepare it themselves

  • Science

    If You Sink a 100kg Solid Iron Ball Into The Deepest Part Of The Sea, Will The Ball Be Deformed By The Pressure?

    Jul 11, 2025
    Jul 11, 2025

    According to known exploration data, the deepest seabed on earth is the marianas trench, located at the bottom of the pacific ocean. The measurement data shows that the deepest part of the marianas trench can reach 11,034 meters, where the pressure is about 110 mpa, equivalent to 1.1 tons of weight per square centimeter. So the question arises, if you take a 100kg solid iron ball and sink it into the deepest part of the sea floor, will the iron ball be deformed by the pressure?

  • Science

    Schrödinger's Cat Is Only One Of The "Four Great Beasts" Of Physics.

    Jul 10, 2025
    Jul 10, 2025

    The "four great beasts" of physics actually exist only in thought experiments, and their proposal helps to develop and improve the relevant theories

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