"Mandela day"
2018-05-12
NGC 1360: The Robin's Egg Nebula - Astronomy picture of the day - 2018 May 11
Image Credit & Copyright: Josep Drudis, Don Goldman
Explanation: This pretty cosmic cloud lies some 1,500 light-years away, it shape and color reminiscent of a blue robin's egg. It spans about 3 light-years, nested securely within the boundaries of the southern constellation Fornax.Recognized as a planetary nebula, NGC 1360 doesn't represent a beginning though. Instead it corresponds to a brief and final phase in the evolution of an aging star. In fact, visible in the telescopic image the central star of NGC 1360 is known to be a binary star system likely consisting of two evolved white dwarf stars, less massive but much hotter than the Sun. Their intense and otherwise invisible ultraviolet radiation has stripped away electrons from the atoms in the surrounding gaseous shroud. The predominant blue-green hue of NGC 1360 seen here is the strong emission produced as electrons recombine with doubly ionized oxygen atoms.
2018-05-07
Norte da Noruega - Imagem do dia - 07-05-2018
Uma imagem captada no norte da Noruega, em 2014
Foto Yannis Behrakis/Reuters
2018-05-06
2018-05-05
2018-05-04
Floresta Amazônica, América do Sul - (Imagem do dia - 04-05-2018)
ISTOCK
A Floresta Amazônica é, sem dúvidas, uma das mais famosas e importantes do mundo inteiro, já que ela conta com a maior quantidade de espécies de plantas e animais de todo o restante do planeta, além de também ser considerada a maior floresta tropical, distribuída em oito países da América do Sul, como Brasil, Colômbia, Guiana Francesa, Bolívia, Suriname, Peru, Venezuela e Equador.
2018-05-03
2018-05-02
José Malhoa - "A descamisada" - Pintura
A descamisada Autor: José Malhoa (1855-1933) Procedência: Coleção particular Data: 1903
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