The particle physics interpretation of the dark matter problem, which is intimately of cosmological and astrophysical nature, is going to be posed under deep scrutiny in the next years. From the particle physics
While it doesn't emit, absorb, or reflect light, we know dark matter exists because of the way its gravity affects visible matter. Galaxies rotate faster than they should based on the mass we can see, and large-scale structures in the universe form in patterns that only make sense if the...
Dark matter is puzzling because, despite being effectively invisible because it does not interact with light, this substance makes up around 86% of the matter in the known universe. That means, for every 1 gram of "everyday matter" that composes stars, planets, moons and humans, there are ...
B Dark matter in the universe is believed by some scientists to be a substance that is not easily observed because it does not directly reflect light. Its existence can only be deduced (推理) because of the effect that it has on surrounding matter. In fact, some members of the scientific...
However, the theory goes further, predicting the emergence of a small, positive cosmological constant – a value that aligns with experimental observations of the universe’s accelerated expansion much better than for other pre-existing theories. ...
Dark matter seems only to interact with the universe as we can observe it through a single physical force: gravity. So, in the case of our invisible black hole, we might have been able to notice it by seeing how the light coming to us from a certain section of the sky was bent ...
The leading theory of dark matter is running out of room to hide. This is a preview of subscription content, access via your institution Access options Subscription info for Chinese customers We have a dedicated website for our Chinese customers. Please go to naturechina.com to subscribe to ...
“While dark matter is the dominant type of matter in the Universe, it is very hard to detect because its interactions with ordinary matter are very weak. So weak, in fact, that dark matter can pass straight through the Earth, or even through the Sun. ...
Dark matter is a mysterious invisible substance that makes up around 85 per cent of all the matter in the universe. Scientists know it's there only because it exerts a powerful gravitational force on visible stars and galaxies, influencing the way they move. Since the 1930s, evidence has gro...
Dark energy– Unknown property in cosmology that causes the expansion of the universe to accelerate Conformal gravity– Gravity theories that are invariant under Weyl transformations Density wave theory– A theory in which waves of compressed gas, which move slower than the galaxy, maintain galaxy's...