Welcome to the world of the possible and the impossible.
On this page you can find various articles that deal with science.
Scattered disc is a distant circumstellar disc in the Solar System that is sparsely populated by icy small solar system bodies, which are a subset of the broader family of trans-Neptunian objects. The scattered-disc objects (SDOs) have orbital eccentricities ranging as high as 0.8, inclinations as high as 40°, and perihelia greater than 30 astronomical…Keep reading
Radioactivity is caused by emission of high energy radiation from unstable atomic nuclei. An atomic nucleus will be unstable if it has an excess of energy caused by an excess of either neutrons or protons. The nucleus will decay into a more stable atom (usually a different element) from the parent atom. An atom may…Keep reading
Seyfert galaxies are one of the two largest groups of active galaxies, along with quasars. They have quasar-like nuclei (very luminous, distant and bright sources of electromagnetic radiation) with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, their host galaxies are clearly detectable. Seyfert galaxies were first detected in…Keep reading
Meteorites are the remains of space rocks that have fallen to Earths surface (a space rock still in space is termed a meteoroid , and when it is plunging through Earths atmosphere it is termed a meteor) . The small number of meteorites that survive vaporization in the atmosphere relatively intact give a picture of…Keep reading
Nuclear star cluster (NSC) or compact stellar nucleus is a star cluster with high density and high luminosity near the center of mass of most galaxies. NSCs are the central massive objects of fainter, low-mass galaxies where supermassive black holes (SMBHs) are not present or are of negligible mass. In the most massive galaxies, NSCs are entirely absent. Some galaxies, including the Milky Way, are known to contain…Keep reading
Transit is a phenomenon when a celestial body passes directly between a larger body and the observer. As viewed from a particular vantage point, the transiting body appears to move across the face of the larger body, covering a small portion of it. However, the probability of seeing a transiting planet is low because it…Keep reading