Search results
Results from the WOW.Com Content Network
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
RTG – (instrumentation) Radioisotope Thermoelectric Generator, a type of power generator used in spacecraft that travel far from the Sun; RV – (astrophysics terminology) radial velocity, the velocity along the line of sight; RX – (catalog) ROSAT X-ray, a catalog of sources detected by ROSAT
The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
"Astronomy" and "astrophysics" are synonyms. [ 3 ] [ 4 ] [ 5 ] Based on strict dictionary definitions, "astronomy" refers to "the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties", [ 6 ] while "astrophysics" refers to the branch of astronomy dealing with "the behavior, physical properties ...
This glossary of physics is a list of definitions of terms and concepts relevant to physics, its sub-disciplines, and related fields, including mechanics, materials science, nuclear physics, particle physics, and thermodynamics.
“He’s singling out cities where there are significant African Americans, and that’s who he’s talking about: black people,” Martin said.
The word 'snake' in various languages Fossae list: Significant works of architecture: Montes list: Words for "hot" in various languages. Only one mountain range is currently named: Caloris Montes, from Latin word for "heat" Planitiae list: Names for Mercury (either planet or god) in various languages. Two exceptions exist. Rupēs list