"No mundo dos leões"
- Don't talk me about Sporting...- Sporting Clube de Braga ?
- No, Lisbon !
2018-03-26
No mundo dos leões - Imagens do Mundo, Africa do Sul - Animais
- Sporting Clube de Braga ?
- No, Lisbon !
Astronomy picture of the day - 2018 March 26 - The Coma Cluster of Galaxies
Image Credit: Russ Carroll, Robert Gendler, & Bob Frank; Dan Zowada Memorial Observatory
Explanation: Almost every object in the above photograph is a galaxy. The Coma Cluster of Galaxies pictured here is one of the densest clusters known - it contains thousands of galaxies. Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does. Although nearby when compared to most other clusters, light from the Coma Cluster still takes hundreds of millions of years to reach us. In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other. Most galaxies in Coma and other clusters are ellipticals, while most galaxies outside of clusters are spirals. The nature of Coma's X-ray emission is still being investigated.
2018-03-25
Brassaï - A noite parisiense - Fotografia
Um dos fotógrafos mais célebres de seu tempo, Brassaï registrou Paris de forma irreverente. A noite parisiense exerceu um enorme fascínio sobre ele, que não cansou de fotografá-la.
Astronomy picture of the day - 2018 March 25 - Announcing Nova Carinae 2018
Image Credit & Copyright: A. Maury & J. Fabrega
Explanation: How bright will Nova Carinae 2018 become? The new nova was discovered only last week. Although novas occur frequently throughout the universe, this nova, cataloged as ASASSN-18fv, is so unusually bright in theskies of Earth that it is now easily visible through binoculars in the southern hemisphere. Identified by the arrow, the nova occurs near the direction of the picturesque Carina Nebula. A nova is typically caused by a thermonuclear explosion on the surface of a white dwarf star that is accreting matter from a binary companion, although details of this outburst are currently unknown. Both professional and amateur astronomers will be monitoring this unusual stellar outburst in the coming weeks, looking to see how Nova Carinae 2018 evolves, including whether it becomes bright enough to be visible to the unaided eye.
2018-03-24
JoanMira - "Recordando amigos do Rio de Janeiro" - Fotos
"Recordando amigos do Rio de Janeiro"
24-03-2018
JoanMira
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