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Archive for March 6, 2012

NASA To Release New Women@Nasa Videos In Celebration Of Women’s History Month


NASA will release new Women@NASA video interviews at the Women, Aerospace and Innovation event on March 8. The event will take place at the George Washington University’s Jack Morton Auditorium and Marvin Center in Washington, D.C., from 9 a.m. to 3 p.m. EST.

The Women@NASA website showcases women from diverse backgrounds, with careers at NASA, telling their stories in their own words. Featured women include astronauts, engineers, scientists and administrators. They discuss their accomplishments and offer encouragement to women and girls considering technical careers to become the trailblazers of tomorrow. The website also provides information about NASA internships and career opportunities.

The event also will spotlight information from the Girl Scouts Research Institute on how to inspire young women to enter science, technology, engineering and mathematics fields. The National Academy of Engineering will present its Engineer Girl website, which answers questions girls may have about engineering jobs and hosts an annual essay contest on ways engineering impacts the world.

Full Story: http://www.nasa.gov/home/hqnews/2012/mar/HQ_12-072_Women_@NASA_2.html

NASA Holds Briefings To Preview Space Station Expeditions


NASA’s Johnson Space Center in Houston will hold two briefings Tuesday, March 20, to preview the upcoming International Space Station Expedition 32 and 33 missions. NASA Television and the agency’s website will broadcast the briefings live.

At 11 a.m. CDT, the International Space Station Program and Science Overview Briefing will cover mission priorities and objectives, which include hundreds of research experiments, a Russian spacewalk, international and commercial cargo deliveries to the complex, and a commercial cargo demonstration flight.

Full Story: http://www.nasa.gov/home/hqnews/2012/mar/HQ_M12-037_Exp_32_33_Briefing.html

Space Weather – Explosions on Venus

March 6, 2012 1 comment

In the grand scheme of the solar system, Venus and Earth are almost the same distance from the sun. Yet the planets differ dramatically: Venus is some 100 times hotter than Earth and its days more than 200 times longer. The atmosphere on Venus is so thick that the longest any spacecraft has survived on its surface before being crushed is a little over two hours. There’s another difference, too. Earth has a magnetic field and Venus does not – a crucial distinction when assessing the effects of the sun on each planet.

As the solar wind rushes outward from the sun at nearly a million miles per hour, it is stopped about 44,000 miles away from Earth when it collides with the giant magnetic envelope that surrounds the planet called the magnetosphere. Most of the solar wind flows around the magnetosphere, but in certain circumstances it can enter the magnetosphere to create a variety of dynamic space weather effects on Earth. Venus has no such protective shield, but it is still an immovable rock surrounded by an atmosphere that disrupts and interacts with the solar wind, causing interesting space weather effects.

Full Story: http://www.nasa.gov/mission_pages/sunearth/news/venus-explosions.html

Study Supports Theory of Extraterrestrial Impact


A 16-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has identified a nearly 13,000-year-old layer of thin, dark sediment buried in the floor of Lake Cuitzeo in central Mexico. The sediment layer contains an exotic assemblage of materials, including nanodiamonds, impact spherules, and more, which, according to the researchers, are the result of a cosmic body impacting Earth.

These new data are the latest to strongly support of a controversial hypothesis proposing that a major cosmic impact with Earth occurred 12,900 years ago at the onset of an unusual cold climatic period called the Younger Dryas. The researchers’ findings appear today in the Proceedings of the National Academy of Sciences.

Full Story: http://www.ia.ucsb.edu/pa/display.aspx?pkey=2662

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