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Posts tagged "Venus"

kenobi-wan-obi:

Capturing Venus: An Amateur Astronomer’s Famous Moon Shot

Venus appears just on the edge of the crescent moon on April 25, 1987, in an image that has appeared in Astronomy magazine.

The Milky Way and Venus rise in early February in Valley of Fire by Brad Goldpaint

kenobi-wan-obi:

Venus at Inferior Conjunction by Max Teodorescu

"After about 5 minutes, the very thin but very large crescent suddenly appeared into the field of view. It was surreal to watch the boiling atmospheric arc of the planet just above the Sun in plain day."

Stars and Venus Trails by Vince Farnsworth

kenobi-wan-obi:

Planet Venus on Sagittarius by Sebastián Guillermaz

kenobi-wan-obi:

Moon, Venus, and Athens National Observatory

Moon and Venus shine in a summer evening twilight of Athens. The historic building of the National Observatory of Athens is on the lower left and at lower right is the Temple of Hephaestus in the ancient Agora.

The national observatory is a research institute founded in 1842; one of the oldest research institutes in Southern Europe. But the astronomical history of this location goes much further back in time. The observatory is next to the Pnyx, a rocky hill in central Athens the Athenians gathered to host their popular assemblies, as early as 507 BC.

It was also where astronomer Meton made observations of the summer solstice in 432 BC, using an instrument named the heliotropion that made him identify his famous calendrical cycle (learn more on UNESCO Astronomy and World Heritage Portal). - Babak Tafreshi

breathethespookydownbow:

Venus Rising

This hemispheric view of Venus was created using more than a decade of radar investigations culminating in the 1990-1994 Magellan mission, and is centered on the planet’s North Pole. The Magellan spacecraft imaged more than 98 percent of the planet Venus and a mosaic of the Magellan images (most with illumination from the west) forms the image base. Gaps in the Magellan coverage were filled with images from the Earth-based Arecibo radar in a region centered roughly on 0 degree latitude and longitude, and with a neutral tone elsewhere (primarily near the south pole). This composite image was processed to improve contrast and to emphasize small features, and was color-coded to represent elevation. Gaps in the elevation data from the Magellan radar altimeter were filled with altimetry from the Venera spacecraft and the Pioneer Venus missions.

Image Credit: NASA/JPL/USGS

kenobi-wan-obi:

Did Venus Give Earth the Moon? Wild New Theory on Lunar History

The Earth’s moon may be a present from Venus, which once had a moon and then lost it, a new theory suggests. Under the theory, Earth’s gravity captured Venus’ old moon, giving our planet its big natural satellite.

This idea contrasts to the thinking of the vast majority of moon researchers, who believe that the Earth’s moon formed some 4.5 billion years ago when a planet-size body slammed into nascent Earth at high speed.

This giant impact hypothesis, however, has its own issues, as did all the alternative moon formation theories discussed this week at the Origin of the Moon conference at the Royal Society here.

"I think part of the key to [understanding] the moon may be that Venus has no moon, and we certainly have to study it (Venus) more," said Dave Stevenson, professor of planetary science at Caltech University, who proposed the Venus idea at the conference. In an interview with SPACE.com after his presentation, Stevenson said that he himself favored the impact theory on moon formation, but unfortunately this theory did not yet answer all the questions.

Venus & Saturn Conjuction above Corfu town

ikenbot:

The Other Red Planet: Soviet Union Scored an Interplanetary First at Venus 45 Years Ago

Illustration: A piloted flyby spacecraft releases a robotic probe (Venera 4) into the cloudy atmosphere of Venus. / NASA

The U.S.S.R.’s Venera 4 was the first spacecraft to return data from inside another planet’s atmosphere

If Venus’s pass across the sun earlier this week yields a bounty of information for hunters of transiting worlds in other planetary systems, it’s because Venus is a known entity. Studying the June 5 Venus transit as if it were a faraway exoplanet “gives us a reality check,” says planetary physicist Colin Wilson of the University of Oxford. “We can check on all those exoplanet techniques to see how accurate they really are.” Such data may enhance NASA’s Kepler mission as well as the many ground-based campaigns using planetary transits to identify distant worlds, a method that has led to the discovery or characterization of more than 200 exoplanets.

That reality check would not be possible without the data planetary scientists already have about Venus. And humanity’s up-close exploration of Earth’s cloud-shrouded closest neighbor began in earnest 45 years ago, when the Soviet probe Venera 4 launched on June 12, 1967.

The first two Veneras had failed after launch. Venera 3, launched in 1965, is thought to have crashed on Venus but returned no data.

At last, on October 18, 1967, Venera 4 became the first man-made object to enter another planet’s atmosphere and send back data. “It was before any Mars landers or anything,” Wilson says. And it changed our view of Earth’s sister planet forever.

Full Article

expose-the-light:

Most Spectacular Shots From 50 Years of Robotic Solar System Exploration

ikenbot:

Venus & rising Sun

Petr Horálek: During last Venus transit the Sun was rising here in Czech republic. So people enjoyed kind of different show. Not only the transit itself, but also atmospheric phenomena of the sunrise.

At first - green flash and refraction effect on our star. And - of course - similar phenomena effected the dark planet’s circle. From almost 7-hours transit people from central Europe saw more than 2 hours of so special astronomical event. And people all around the world were very lucky, because there were also sunspots on the Sun to compare, how dark they really are. While the Venus circle was black, the sunspot aren’t so black as the planet, because they have around 4500 K (around 20-times more than atmosphere of Venus).

ikenbot:

Chasing clouds on Venus

Clouds regularly punctuate Earth’s blue sky, but on Venus the clouds never part, for the planet is wrapped entirely in a 20 km-thick veil of carbon dioxide and sulphuric dioxide haze.

This view shows the cloud tops of Venus as seen in ultraviolet light by the Venus Express spacecraft on 8 December 2011, from a distance of about 30 000 km.

Much of the image is occupied by the planet’s southern hemisphere, with the south pole at the bottom of the frame and the equator close to the top. The visible top cloud layer seen in the image is about 70 km above the planet’s surface.

(via afro-dominicano)

ikenbot:

Behold, Golden Globe

This look at Venus pastes mapping data from NASA’s Magellan mission onto a computer-generated sphere.

ikenbot:

Just Like Home

Moon meets with planet Venus in the early evening twilight of Brittany, France.