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What is a space in English?
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Space is a three-dimensional continuum containing positions and directions. [1] In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. [2]
- Space radiation invisible to human eyes. The majority of space is relatively empty, with just stray bits of dust and gas floating around. This means that when humans send a probe to a distant planet or asteroid, the craft will not encounter "drag" in the same way that an airplane does as it sails through space.
- Dark matter and energy. There remain two giant mysteries about space: dark matter and dark energy. While scientists have provided extensive evidence for the existence of dark matter and dark energy, they are each still poorly understood as, so far, scientists cannot directly observe them and can only observe their effects.
- Black holes. Smaller black holes can form from the gravitational collapse of a gigantic star, which forms a singularity from which nothing can escape — not even light, hence the name of the object.
- Stars, planets, asteroids and comets. Stars (like our own sun) are immense balls of gas that produce their own radiation. They can range from red supergiants to cooling white dwarfs that are the leftovers of supernovas, or star explosions that occur when a big one runs out of gas to burn.
SPACE definition: 1. an empty area that is available to be used: 2. the area around everything that exists…. Learn more.
- Space is completely silent. There is no air or atmosphere in space. Since it is a vacuum, sound waves will have no medium to travel to. That means, no one will hear you scream in space, even if you shout the loudest!
- The hottest planet in our solar system is 450° C. The hottest planet in the solar system is Venus. This scorching planet has an average surface temperature of about 232 °F (450 °C).
- There may be life on Mars. Of all the planets in our solar system (apart from Earth), Mars is the one most likely to be hospitable to life. In 1986, NASA found what they thought may be fossils of microscopic living things in a rock recovered from Mars.
- Nobody knows how many stars are in space. The sheer size of space makes it impossible to accurately predict just how many stars we have. Right now, scientists and astronomers use the number of stars only within our galaxy, the Milky Way, to estimate.
What is space? Access the image. In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. 'Outer space' begins about 100 km above the Earth, where the shell of air around our planet disappears.
noun. the unlimited or incalculably great three-dimensional realm or expanse in which all material objects are located and all events occur. the portion or extent of this in a given instance; extent or room in three dimensions: the space occupied by a body. extent or area in two dimensions; a particular extent of surface:
Mar 21, 2024 · What is space? What is outer space? Outer space structure. What is space made of? Normal matter. Dark matter. Dark energy. What is in space: top 5 exotic objects. The coldest object in space. The hottest place in space. The oldest star in space. The biggest object in space. The biggest water source in space. F.A.Q. How old is space?
