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High Altitude Ballooning with TVNSP

What is it?

TVNSP is a program of amateur near space exploration.
Near space begins at an altitude of 75,000 feet and ends at the beginning of space, or at 62.5 miles according to the International Aeronautical Federation (FAI).
Once in near space, air pressures drop to below 4% of air pressure at sea level.
The distance to the horizon grows beyond 330 miles, compared to a distance to the horizon of 3 miles for adults standing at sea level.
Because of the reduced air pressure, blue light from the sun is no longer scattered.
This leaves the sky inky black.
The distance to the horizon is so great that the curvature of the earth becomes apparent in photographs taken in near space.
Hugging the Earth's edge is seen a thin blue layer of atmosphere.
Near space altitudes are well within the Stratosphere and Ozone layer.
The lack of filtering atmosphere increases the ultraviolet flux of the sun.
In near space the weather is always bright and sunshiny, but chillingly cold.
Temperatures drop to at least -60 degrees Farenheit and sometimes as low as -90 degrees Farenheit.
The lower temperatures and pressures make near space a close analog to the surface of the planet Mars.

Who belongs to this group and can anybody join?

There are approximately 10-15 members with
6-7 of us being the most active.
Anybody is welcome to join!

What is the groups most memorable achievement?

On 11-17-01 we reached over 94,000 feet, making the first full length video from launch to landing at this altitude!

Books to recommend:

The Pre-Astronauts, Manned Ballooning on the Threshold of Space
By Craig Ryan

Who would you like to write to?

To become a member, subscribe to tvnsp@yahoogroups.com

To add your email to this list, please email the Webmaster. Email is at the bottom of the webpage. Remember, you must be a member of tvnsp@yahoogroups.com if you are E-mailing the Group!

Click here to subscribe to TVNSP!

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