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1 天前 · The universe is all of space and time [a] and their contents. [10] It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of energy and matter, and the structures they form, from sub-atomic particles to entire galactic filaments.
- 13.787 ± 0.020 billion years
- At least 10⁵³ kg
- 9.9×10−27 kg/m³
1 天前 · The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty
1 天前 · A black hole is a region of spacetime where gravity is so strong that nothing, including light and other electromagnetic waves, is capable of possessing enough energy to escape it. [2] Einstein 's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.
4 天前 · Observable universe, the region of space that humans can actually or theoretically observe with the aid of technology. The observable universe, which can be thought of as a bubble with Earth at its centre, is differentiated from the entirety of the universe, which is the whole cosmic system of.
2024年4月26日 · Physics - The Universe’s Topology May Not Be Simple. FOCUS. The Universe’s Topology May Not Be Simple. April 26, 2024 • Physics 17, 74. Most models for the overall shape and geometry of the Universe—including some exotic ones—are compatible with the latest cosmic observations. Jeff Weeks/ GPL / Wikimedia Commons. Hall of mirrors.
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2024年5月14日 · According to Einstein’s Theory of Relativity, the universe's shape is determined by mass and energy, which is described by a curvature measure called Omega (Ω).
2024年5月17日 · universe, the whole cosmic system of matter and energy of which Earth, and therefore the human race, is a part.
