Fusor (disambiguation) — Fusor may refer to:* Fusor or the Farnsworth–Hirsch Fusor, an apparatus designed by Philo T. Farnsworth to create nuclear fusion * Fusor (astronomy), an object that achieves core fusion during its lifetime * Fuzor (Transformers), a type of… … Wikipedia
Outline of astronomy — Mauna Kea in Hawaii is one of the world s premier observatory sites. Pictured is the W. M. Keck Observatory, an optical interferometer. The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the… … Wikipedia
Planetar (astronomy) — Planetar is a term used in astronomy that refers to one of two things: * Brown dwarfs objects intermediate in size between planets and stars. * Interstellar planets planetars that are cold masses smaller than brown dwarfs and do not orbit a star … Wikipedia
Planemo — A planemo is a celestial object with mass greater than that of an irregularly shaped asteroid, yet smaller than a nuclear reactive brown dwarf or star. This bizarre class of planet sized objects has no suns at all, and instead floats untethered… … Wikipedia
IAU definition of planet — This article is about the formal definition established in 2006. For prior usage, see Definition of planet. The definition of planet set in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a… … Wikipedia
Mesoplanet — is a term coined by Isaac Asimov to refer to planetary bodies with sizes smaller than Mercury but larger than Ceres. Assuming size is defined by linear dimension (or by volume), mesoplanets should be approximately 1,000 km to 5,000 km… … Wikipedia
Star — For other uses, see Star (disambiguation) … Wikipedia
Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… … Wikipedia
White dwarf — For other uses, see White dwarf (disambiguation). Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint pinprick of light to the lower left of the much brighter Sirius A … Wikipedia
Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… … Wikipedia
