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1) Active galactic nuclei are very luminous. Their energy output is in two forms: nonthermal continuum and thermal emission line.
2) Any galaxy which is emitting large quantities of non-thermal radiation.
Industry:Astronomy
Controlling the shape of a telescope mirror at a relatively slow rate.
Industry:Astronomy
1) Unit of electric current. "The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per meter of length" CIPM 1946, Resolution 2, approved by the 9th CGPM 1948). A current of 1 A is equivalent to the passage along the filament of a light bulb of about 6 × 1018 electronic charges per second.
2) constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per meter of length
Industry:Astronomy
Una variabile di spettro con spettro mostrando le linee forti, profuse di terre rare, elementi di ferro-picco e Si.
Industry:Astronomy
Точки на орбіті один компонент двійковій системі, де це самий далекий від іншого.
Industry:Astronomy
1) Divination using the positions of the planets, the Sun and the Moon as seen against the stars in the constellations of the zodiac - a "science" almost as old as homo sapiens. Although at one stage in history astrology and astronomy were almost synonymous- the latter has advanced so far during the last three centuries that the two now bear little relation to each other.
2) The belief that human affairs and people's personalities and characters are influenced by (or encoded in) the positions of the planets.
Industry:Astronomy
Мантія газів навколо зірок планети або місяця, іноді навіть формування очевидною поверхні тіла. Для тіла, щоб зберегти атмосферу залежить від тяжкості організму і температури і складу газів. Середня атмосферного тиску на поверхні 10330 кг/м2 і також називають атмосферу.
Industry:Astronomy
Падають з щільність енергії випромінювання з відстань від джерела, або прохід через поглинання або середовище.
Industry:Astronomy
