Refractory (astronomy)

Refractory (astronomy)

In planetary science, any material that boils or condenses at high temperatures is called refractory. [http://www.psrd.hawaii.edu/PSRDglossary.html#refractory] The opposite of refractory is volatile.

The refractory group includes elements and compounds like metals and the rocky silicates which make up the bulk of the mass of the Terrestrial Planets, and at least a significant mass of the asteroids, dwarf planets and Trans-Neptunian objects.

External links

* [http://www.psrd.hawaii.edu/PSRDglossary.html#refractory Refractory] Planetary Science Research Discoveries


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Refractory (disambiguation) — Refractory is the quality of a material to retain its strength at high temperatures. Refractory may also refer to:In materials*Refraction (metallurgy), the resistance of metals to heat *Refractory metals, metals that are resistant to heat… …   Wikipedia

  • Cosmic dust — Space dust redirects here. For other uses, see Space dust (disambiguation). Porous chondrite interplanetary dust particle. Cosmic dust is a type of dust composed of particles in space which are a few molecules to 0.1 µm in size. Cosmic dust… …   Wikipedia

  • cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium

  • India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

  • Solar System — This article is about the Sun and its planetary system. For other systems, see planetary system and star system. For a list of physical and orbital statistics for the Solar System s largest bodies, see List of gravitationally rounded objects of… …   Wikipedia

  • Chondrite — Not to be confused with Chondrodite. A specimen of the NWA 869 chondrite (type L4 6), showing chondrules and metal flakes Chondrites are stony meteorites that have not been modified due to melting or differentiation of the parent body. They… …   Wikipedia

  • meteorite — meteoritic /mee tee euh rit ik/, meteoritical, meteorital /mee tee euh ruyt l/, adj. /mee tee euh ruyt /, n. 1. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid. 2. a meteoroid. [1815 25; METEOR + ITE1] * * …   Universalium

  • Alpha Centauri — This article is about α Centauri . For a Centauri , see V761 Centauri. For A Centauri , see A Centauri. For other uses, see Alpha Centauri (disambiguation). Alpha Centauri A[1]/B[2] …   Wikipedia

  • Beta Pictoris — Starbox begin name=Beta PictorisStarbox image caption=Map of the Pictor constellation showing the position of Beta Pictoris.Starbox observe epoch=J2000 ra=05h 47m 17.1scite web|url=http://simbad.u strasbg.fr/simbad/sim id?protocol=html… …   Wikipedia

  • Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”