What is the cosmic microwave background radiation?
The cosmic microwave background radiation (CMB) is the residual electromagnetic radiation left over from the early universe, which has cooled and stretched over billions of …
The cosmic microwave background radiation (CMB) is the residual electromagnetic radiation left over from the early universe, which has cooled and stretched over billions of …
Light pollution refers to the excessive or misdirected artificial light produced by human activities, which brightens the night sky and obscures the visibility of stars …
Gravitational lensing is a phenomenon predicted by Einstein’s theory of general relativity in which the gravitational field of a massive object, such as a galaxy …
Dark matter is a hypothetical form of matter that does not emit, absorb, or reflect electromagnetic radiation, making it invisible and detectable only through its …
Dark energy is a mysterious form of energy that is thought to permeate all of space and is responsible for the observed accelerated expansion of …
Astronomy is the scientific study of celestial objects such as stars, planets, galaxies, and the universe as a whole. It encompasses observations, theoretical modeling, and …
An event horizon is a boundary in spacetime beyond which events cannot affect an outside observer. In the context of black holes, the event horizon …
A light-year is a unit of distance used in astronomy to measure the vast distances between celestial objects. It represents the distance that light travels …
Quasars, short for quasi-stellar radio sources, are extremely bright and distant objects powered by supermassive black holes at the centers of galaxies. They emit enormous …
The Great Attractor is a gravitational anomaly located in the direction of the Hydra and Centaurus constellations that influences the motion of galaxies in the …