National Aeronautics and Space Administrion

Since its inception in 1958, NASA has accomplished many great scientific and technological feats in air and space. NASA technology also has been adapted for many nonaerospace uses by the private sector. NASA remains a leading force in scientific research and in stimulating public interest in aerospace exploration, as well as science and technology in general. Perhaps more importantly, our exploration of space has taught us to view Earth, ourselves, and the universe in a new way. While the tremendous technical and scientific accomplishments of NASA demonstrate vividly that humans can achieve previously inconceivable feats, we also are humbled by the realization that Earth is just a tiny "blue marble" in the cosmos. Check out our "Thinking About NASA History" folder online as an introduction to how history can help you.

Tuesday, March 13, 2012

Venus

So poisonous, yet so like earth; Venus even has an atmosphere. Its climate went out of control. It is now heavy.with sulfur. Its temperature is just as crazy, it is 400 degrees, which is warmer then a conventional oven.

Venus is a total of 68 million miles from the sun, and rotates in the opposite direction. It has 224.7 days in a year and 243 hours within a day.

The surface is enveloped by vast clouds, that reflects 60% of both sunlight and heat. It's condition is a vast greenhouse. The atmospheric pressure is 90 times that of Earths. It mainly contains CO2 and Nitrogen.

The Soviet Union "Venera" probe in 1961, which plunged back in the atmosphere in 1994. Magellin went into orbit in 1990. This allowed maps to be made.

Ishtar Terra and Aphrodite Terra are the only two continents on Venus. In total they have 167 active volcanoes. The planet also has nearly 1000 impact craters.

In 2006 the Europe launched the Venus Express. It got many pictures of Venus, even one of the double vortex of the storm over the South Pole, which is only visible in clear skies in the daylight in clear skies.

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