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View Full Version : A Glimpse at the Future of Our Sun



Fraser
2006-Jul-20, 08:49 PM
A team of astronomers recently used Arizona's Infrared-Optical Telescope Array (IOTA) of three linked telescopes to peer 4 billion years into the future, when our Sun balloons up to become a red giant star. The three instruments act as a powerful interferometer, providing a view that would only be possible with a much larger instrument. They observed several red giant stars - the eventual fate of our Sun - and discovered their surfaces to be mottled and varied, covered with enormous sunspots.

Read the full blog entry (http://www.universetoday.com/2006/07/20/a-glimpse-at-the-future-of-our-sun/)

Jerry
2006-Jul-21, 01:27 PM
The astronomers also employed a new technology to combine the light from the three IOTA telescopes: a half-inch wide solid-state chip, called the integrated-optics beam-combiner (IONIC), developed in France. This contrasts with the typical interferometer, which consists of many mirrors to direct the light from multiple telescopes to a common detector.
We are lucky France does not have a technology policy in place as restrictive as ITAR, which would have prevented the exportation of this techology.

John Mendenhall
2006-Jul-21, 07:30 PM
What? Restrictive? How about more explanation?

Metricyard
2006-Jul-22, 05:53 PM
What? Restrictive? How about more explanation?

Hello John Mendenhall, welcome to the board> :-)



We are lucky France does not have a technology policy in place as restrictive as ITAR, which would have prevented the exportation of this techology.

If the ITAR technlology policy would have prevented the exportation of this device, why then would ITAR allow such a device to be imported?

ToSeek
2006-Jul-28, 06:36 PM
Hello John Mendenhall, welcome to the board> :-)



If the ITAR technlology policy would have prevented the exportation of this device, why then would ITAR allow such a device to be imported?

The key issue with ITAR is preventing US technology from going overseas where it could go to third parties that might use it against us. (ITAR stands for International Traffic in Arms Regulation.) It doesn't say anything about using foreign technology here.