How Space Works The Fact Visually Explained

Sách mới về không gian của DK trong năm 2021 trình bày theo phong cách The Fact Visually Explained.

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Structures in the Universe

Everything made of matter in the Universe – including the densest stars, planets, and moons, as well as diffuse gas and dust – can be arranged in a hierarchy of structures, all bound together by gravity. Objects within a structure orbit a centre of mass, usually in the centre of the structure. For example, the planets in the Solar System orbit the central Sun, while everything in our galaxy orbits its centre, which contains a supermassive black hole around 4 million times the mass of the Sun.

The Universe is everything that exists, has existed, or will exist. It comprises all matter and all space, permeated with light and other kinds of radiation. It also includes all time, both past and future.

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