Joao Marcelino

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<b>1. Imperdíveis</b> <i>zoom_out_map</i><p><b>1</b>/12 (Ricardo Stuckert/ Fotos Públicas)<p>São Paulo – O Cristo Redentor, no <b>Rio de Janeiro</b>, é o melhor ponto turístico do …

as 15 fotos mais caras da história

O que faz uma foto adquirir um valor tão diferenciado? O número de cópias em circulação? O marketing relizado sobre seu lançameto? A perfeição das …

Por que Marte não cresceu?

STS-86, August 18, 1997 Shortly before dawn, a red-rimmed moon helps to light the way for the Space Shuttle Atlantis as it rolls out to Launch Pad 39A in preparation for launch of Mission STS-86. STS-86 will be the seventh docking of the Space Shuttle with the Russian Space Station Mir. Liftoff is targeted for no earlier than September 22. STS-86 was launched on September 26, 1997, 02:34:19 UTC. the mission lasted 10 days, 19 hours, 22 minutes,. This was the last Atlantis mission before it was taken out of service temporarily for maintenance and upgrades, including the glass cockpit. (credit: NASA-KSC)

APOD: Too Close to a Black Hole (2014 Oct 26) Image Credit & Copyright: Alain Riazuelo Explanation: What would you see if you went right up to a black hole? Featured is a computer generated image highlighting how strange things would look. The black hole has such strong gravity that light is noticeably bent towards it - causing some very unusual visual distortions. Every star in the normal frame has at least two bright images - one on each side of the black hole. Near the black hole, you can see the whole sky - light from every direction is bent around and comes back to you. The original background map was taken from the 2MASS infrared sky survey, with stars from the Henry Draper catalog superposed. Black holes are thought to be the densest state of matter, and there is indirect evidence for their presence in stellar binary systems and the centers of globular clusters, galaxies, and quasars. Starship Asterisk* • APOD Discussion Page #APOD

APOD: Milky Way over Devils Tower (2014 Oct 31) Image Credit & Copyright: David Lane Explanation: A mysterious formation known as Devils Tower rises into the dark above northeastern Wyoming's prairie landscape in this 16 frame panoramic view. Seen against the night sky's thin, pale clouds and eerie green airglow, star clusters and nebulae of the Milky Way arc toward the galaxy's central realm at right of the frame. Of course the scene contains the Milky Way's own haunting and grisly visages of halloween, including ghosts, a flaming skull, a glowing eye and a witch's broom. To find them, slide your cursor over the picture or just follow this link, if you dare. And have a safe and Happy Halloween! Starship Asterisk* • APOD Discussion Page #APOD

Shot of the moon and earth. Amazing view from the Chang'e 5 spacecraft.

Virgin Galactic SpaceShipTwo suffers 'anomaly'

Hubble vê a luz fantasma de galáxias mortas

A uma distância de 4 bilhões de anos-luz existe um superaglomerado de galáxias, chamado de “Aglomerado de Pandora”, ou Abell 2744, com uma massa …

All Alone in the Night - Time-lapse footage of the Earth as seen from the ISS

O dia em que a humanidade pousou em um cometa pela primeira vez na história. O robô Philae desacoplou da sonda Rosetta e aterrisou com sucesso no cometa 67P/Churyumov-Geramisenko, localizado a 500 milhões de quilômetros da Terra.

Stunning New View of Planetary Genesis

Such a shame they decommissioned the Space Shuttles.

APOD: The Cat's Eye Nebula from Hubble (2014 Nov 09) Image Credit: NASA, ESA, HEIC, and The Hubble Heritage Team (STScI/AURA) Explanation: To some, it may look like a cat's eye. The alluring Cat's Eye nebula, however, lies three thousand light-years from Earth across interstellar space. A classic planetary nebula, the Cat's Eye (NGC 6543) represents a final, brief yet glorious phase in the life of a sun-like star. This nebula's dying central star may have produced the simple, outer pattern of dusty concentric shells by shrugging off outer layers in a series of regular convulsions. But the formation of the beautiful, more complex inner structures is not well understood. Seen so clearly in this digitally sharpened Hubble Space Telescope image, the truly cosmic eye is over half a light-year across. Of course, gazing into this Cat's Eye, astronomers may well be seeing the fate of our sun, destined to enter its own planetary nebula phase of evolution ... in about 5 billion years. Starship Asterisk* • APOD Discussion Page #APOD

A timelapse of the Sun in 4K

Várias estrelas do universo estão flutuando entre as galáxias

Um novo estudo da luz de fundo do universo sugere que até metade de suas estrelas podem estar flutuando entre as galáxias. As medições foram feitas …

#Today in 1984, Space Shuttle Enterprise arrived at Vandenberg AFB for facility tests

Robô Philae manda boas notícias do cometa, mas pode ter pousado em um declive. Veja fotos, que são históricas

Striking Pictures From International Space Station Reveal Gorgeous Earth

Selfies from outer space: Self-portraits by astronauts and robots far from Earth

VOCÊ SABIA? Os anéis de Saturno parecem homogêneos, mas na verdade são formados por bilhões de fragmentos de gelo com dimensões variadas: desde grãos de poeira até blocos do tamanho de uma casa. Leia mais na reportagem "O senhor dos anéis"

APOD: Star Formation in the Tadpole Nebula (2014 Nov 18) Image Credit: WISE, IRSA, NASA; Processing & Copyright : Francesco Antonucci Explanation: Dusty emission in the Tadpole nebula, IC 410, lies about 12,000 light-years away in the northern constellation Auriga. The cloud of glowing gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. Formed in the interstellar cloud a mere 4 million years ago, bright cluster stars are seen all around the star-forming nebula. Notable near the image center are two relatively dense streamers of material trailing away from the nebula's central regions. Potentially sites of ongoing star formation in IC 410, these cosmic tadpole shapes are about 10 light-years long. The featured image was taken in infrared light by NASA's Wide Field Infrared Survey Explorer (WISE) satellite. Starship Asterisk* • APOD Discussion Page #APOD

APOD: LDN 988: Dark Nebula in Cygnus (2014 Nov 20) Image Credit & Copyright: Bob Franke Explanation: Obscuring the rich starfields of northern Cygnus, dark nebula LDN 988 lies near the center of this cosmic skyscape. Composed with telescope and camera, the scene is some 2 degrees across. That corresponds to 70 light-years at the estimated 2,000 light-year distance of LDN 988. Stars are forming within LDN 988, part of a larger complex of dusty molecular clouds along the plane of our Milky Way galaxy sometimes called the Northern Coalsack. In fact, nebulosities associated with young stars abound in the region, including variable star V1331 Cygni shown in the inset. At the tip of a long dusty filament and partly surrounded by a curved reflection nebula, V1331 is thought to be a T-Tauri star, a sun-like star still in the early stages of formation. Starship Asterisk* • APOD Discussion Page #APOD

APOD: M1: The Crab Nebula (2014 Nov 21) Image Credit & Copyright: Martin Pugh Explanation: The Crab Nebula is cataloged as M1, the first object on Charles Messier's famous 18th century list of things which are not comets. In fact, the Crab is now known to be a supernova remnant, debris from the death explosion of a massive star, witnessed by astronomers in the year 1054. This sharp, ground-based telescopic view uses narrowband data to track emission from ionized oxygen and hydrogen atoms (in blue and red) and explore the tangled filaments within the still expanding cloud. One of the most exotic objects known to modern astronomers, the Crab Pulsar, a neutron star spinning 30 times a second, is visible as a bright spot near the nebula's center. Like a cosmic dynamo, this collapsed remnant of the stellar core powers the Crab's emission across the electromagnetic spectrum. Spanning about 12 light-years, the Crab Nebula is a mere 6,500 light-years away in the constellation Taurus. Starship Asterisk* • APOD Discussion Page #APOD