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from article Syzygy
Diagram, not to scale, of the Sun, the Earth, the Moon, and a planet, illustrating syzygy. Symbols are explained in text.
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from article Occultation
Schematic light curve of a central occultation by a ringed planet with substantial atmosphere. The relative brightness of the star, π(r), is plotted as a function of time or distance from the center of the planet, r. The decrease in stellar…
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from article Fossil apes
Reconstructions and partial reconstructions of the craniums of fossil apes: (a) Proconsul, (b) Afropithecus, (c) Oreopithecus, (d) Ouranopithecus, (e) Sivapithecus, and (f) Ankarapithecus.
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from article Fossil apes
Cladogram of the evolutionary relationships of the key fossil and living apes. Broken lines indicate uncertain relationships.
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from article Cosmic strings
Snapshots of the simulated string distribution, that is, the string network, at two different times. (a) Radiation-dominated epoch. (b) Matter-dominated era. The size of the simulation box is that of the visible universe. (C. Ringeval, after D.…
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from article Star
A view of the night sky from Cerro Paranal in the Atacama Desert in Chile. The bright star at top left is Sirius, the brightest star other than the Sun as seen from Earth. The bright star at right is Canopus, which happens to be the second brightest…
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from article Star
Looking toward the core of Milky Way, along a line of sight holding millions of stars in the disk of the Galaxy and obscuring dark bands of dust. (Credit: NASA)
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from article Star
The Hertzsprung-Russell (HR) diagram, which plots stars' temperatures (x axis) against their luminosities (y axis). Numerous examples of stars in the Milky Way are included in this sample diagram. (Credit: ESO)
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from article Star
An artist's impression of the sizes and appearances of a typical Sunlike star, a low-mass star, a brown dwarf, and a gas giant planet. (Credit: NASA’s Goddard Space Flight Center)
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from article Star
The Jewel Box open cluster (Kappa Crucis), which lies next to the Crux (Southern Cross) constellation. (Credit: ESO)
