ingularity is referred to a quantity, which approaches infinity as another parameter goes to zero. An example is a black hole, in which a very large mass gets concentrated in so short a distance that gravitational forces become infinite and all matter and energy (including light or electromagnetic energy) cannot escape it. At this level all physical laws break down.
A quasar is a point-like source that is associated with radiatively efficient emission of an active galaxy, which means that its central black hole and is undergoing high rates of mass accretion. They are typically among the most distant objects we can observe and have highest red shifts and thus on the fringes of universe.
Answer:
Poznań is a city on the Warta River in western Poland. It’s known for universities as well as its old town, with Renaissance-style buildings in Old Market Square. Poznań Town Hall houses the Historical Museum of Poznań, with exhibits on the city. The town hall's clock features mechanical goats that butt heads at noon. The Gothic and baroque Saints Peter and Paul Cathedral is built on an island called Ostrów Tumski.
Explanation:
Write some facts about Poznan.
