In theoretical physics, a chronometric singularity (also called a temporal or horological singularity) is a point at which time cannot be measured or described. An example involves a time at a coordinate singularity, e.g. a geographical pole.
In mathematics and physics, a coordinate singularity occurs when an apparent singularity or discontinuity occurs in one coordinate frame that can be removed by choosing a different frame. An example is the apparent (longitudinal) singularity at the...
In cosmology, a static universe is a cosmological model in which the universe is not assumed to be undergoing unlimited global expansion. Such models can differ spatially and temporally, depending on the particular cosmology. A static infinite...
This is a list of people who have made noteworthy contributions to cosmology (the study of the history and large-scale structure of the universe) and their cosmological achievements.
The Saraswati River (IAST: Sárasvatī-nadī́) is a deified Rigvedic river first mentioned in the Rigveda and later in Vedic and post-Vedic texts. It played an important role in the Vedic religion, appearing in all but the fourth book of the...
The narrow-nosed rhinoceros (Stephanorhinus hemitoechus), also known as the steppe rhinoceros, is an extinct species of rhinoceros belonging to the genus Stephanorhinus that lived in western Eurasia, including Europe, and West Asia, as well as North...
The second survey expedition of HMS Beagle took place from 27 December 1831 to 2 October 1836. Robert FitzRoy, the newest commander of Beagle, had thought of the advantages of having someone onboard who could investigate geology, and sought a...
This paleomammalogy list records new fossil mammal taxa that were described during the year 2020, as well as notes other significant paleomammalogy discoveries and events which occurred during the year.