Dark energy - Wikipedia
In physical cosmology and astronomy, dark energy is a proposed form of energy that affects the universe on the largest scales. Its primary effect is to drive the accelerating expansion of the universe.
What is Dark Energy? Inside our accelerating, expanding Universe
2024年2月5日 · Nine billion years after the universe began, its expansion started to speed up, driven by an unknown force that scientists have named dark energy. But what exactly is dark energy? The short answer is: We don't know.
暗能量（宇宙学专有术语）_百度百科
神秘的暗能量（dark energy）真的在加速宇宙的膨胀吗？ 一支由50余位天文学家组成的国际研究小组通过计算一万多个星系的合并速率，进一步加深了人们对宇宙暗能量奥秘的认识。
Dark Energy and Dark Matter | Center for Astrophysics | Harvard ...
We call that mysterious force “dark energy”. Despite the name, dark energy isn’t like dark matter, except that they’re both invisible. Dark matter pulls galaxies together, while dark energy pushes them apart. Astronomers measure the expansion of the universe using the explosions of white dwarfs, called type Ia supernovas, which led to ...
Dark Matter & Dark Energy - Science@NASA
Matter is defined as any substance that has mass and occupies space. But there’s more to the universe than the matter we can see. Dark matter and dark energy are mysterious substances that affect and shape the cosmos, and scientists are still trying to figure them out.
What is dark energy? | Space
2022年11月24日 · Dark energy is a hypothetical form of energy that is proposed by physicists to explain why the universe is not just expanding but is doing so at an accelerating rate. Think of dark energy...
Dark energy | Definition, Discoverers, & Facts | Britannica
5 天之前 · dark energy, repulsive force that is the dominant component (69.4 percent) of the universe. The remaining portion of the universe consists of ordinary matter and dark matter. Dark energy, in contrast to both forms of matter, is relatively uniform in time and space and is gravitationally repulsive, not attractive, within the volume it occupies.
What is dark energy? - University of Chicago News
“Dark energy” is a term scientists use to refer to whatever is causing the universe to expand faster over time. We don’t know exactly what dark energy is —no one has ever directly seen or measured it—but some force seems to be currently pushing the universe to expand faster than it should, according to everything else we know about the cosmos.
The dark energy pushing our universe apart may not be what it …
2024年11月20日 · Distant, ancient galaxies are giving scientists more hints that a mysterious force called dark energy may not be what they thought. The Dark Energy Spectroscopic Instrument uses a telescope to create a three-dimensional map of …
[2401.04293] How Dark is Dark Energy? - arXiv.org
2024年1月9日 · In this paper, we illustrate a result that may significantly impact understanding the relationship between dark energy and structure formation in the late-epoch Universe. Our analysis exploits a scale-dependent energy functional, initially developed for image visualization, to compare the physical and geometrical data that distinct cosmological ...
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