eclipsing
21Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… …
22Eclipse — An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another. The term is derived from the ancient Greek noun gr. ἔκλειψις ( gr. ékleipsis ), from verb gr. ἐκλείπω ( gr. ekleípō ), I cease to exist, a …
23Cycloalkane — Ball and stick model of cyclobutane Cycloalkanes (also called naphthenes not to be confused with naphthalene) are types of alkanes that have one or more rings of carbon atoms in the chemical structure of their molecules. Alkanes are types of… …
24variable star — Astron. a star that varies markedly in brightness from time to time. Also called variable. [1780 90] * * * Star whose observed brightness varies noticeably in intensity. Pulsating variables expand and contract in cycles, pulsating rhythmically in …
25DP Leonis — Artist s rendering of DP Leo and its planetary companion Observation data Epoch J2000.0      Eq …
26Kataklysmische Veränderliche — Ein kataklysmischer Veränderlicher (Abk. CV von engl. Cataclysmic Variable) ist ein enges halbgetrenntes Doppelsternsystem. Es besteht aus einem akkretierenden Weißen Zwerg und einem Masse verlierenden roten Zwergstern, Heliumstern oder… …
27Methods of detecting extrasolar planets — Any planet is an extremely faint light source compared to its parent star. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, only a …
28Circumbinary planet — An artist s impression of the giant planet orbiting the binary system PSR B1620 26, which contains a pulsar and a white dwarf star and is located in the globular cluster M4. A circumbinary planet is a planet that orbits two stars instead of one.… …
29NN Serpentis — Rendering of NN Serpentis system Observation data Epoch {{{epoch}}}      Equinox …
30Planète circumbinaire — Une planète circumbinaire est une exoplanète orbitant autour d une étoile binaire. Il n existe aujourd hui que quatre systèmes planétaires circumbinaires avérés, totalisant cinq exoplanètes. Découverte Le premier système planétaire circumbinaire… …
