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World Year of Physics 2005

Eng-Tips Forums for engineering professionals

"A View on The Future of Thermal Imaging",
the slides from the IR/Info 2004 Keynote talk can be viewed on the web or downloaded.....

Space Temperatures

Millions of Degrees - Do They Exist?

Yes they do. In a web article:

"Supernova shock wave creates halo effect"

At 10:50 19 August 2005, the NewScientist.com news service, Author Maggie McKee reported on observations with the Hubble Space Telescope and the Chandra X-ray Observatory of a bright supernova that exploded in 1987. As intense heat from the shock wave continues to spread, it will illuminate the dense gas blown off by the detonating star, which was originally about 20 times more massive than our Sun.

"...Before it blew up, it drove out a high-speed wind that carved a cavity almost devoid of matter around itself. Hubble glimpsed the edge of this cavity when the supernova lit up the region like a flashbulb in 1987. The explosion created a fast-moving shock wave that Chandra observed in1999 as it travelling through the cavity.

"Now, that shock wave appears to have reached the edge of the cavity and is heating the dense gas there to millions of degrees. The evidence comes from a ring of superheated gas detected by Chandra and pearl-like "optical hotspots" seen by Hubble. (View time-lapse Chandra images here, mov format.)"(Ed. Note: Over several Year's time)

Supernova image courtesy NASA
Click on image to enlarge. 

"The hotspots are thought to have formed where the shock wave rammed into blobs of cool gas that had been whittled into finger shapes by the fast stellar wind that carved out the cavity. (View an animation here, mov format)." Courtesy: NewScientist.com news service,

Astronomical Temperatures

The Three Kelvin Background Radiation Temperature of the Universe
Miniature of space backgroud temperature map
A map or colored image in red (hotter) fluctuations and blue and black (cooler) fluctuations around the average of 3K from a UK university website-since the orignal on the NASA Goddard site had its URL changed by some quirk of Internet bad luck(eliminating useful URLs seems to be a bad habit some websites have-pity they are run by impolite people).

Temperatures of the Planets in our Solar System


Temperatures and Stellar Fingerprints

Stars have characteristics such as temperature, luminosity (brightness), mass, galactic location, distance to the earth, and even age -- all combined forming a stellar fingerprint that uniquely identifies a specific star.

A Starry Night

Temperature of our sun

and a lot more; includes some NASA views of planets and tons of facts

Stellar Temperatures: How Hot Is That Star?

From The University of California. "How hot is the sun?" is one question that many people ask. This project provides an opportunity to explore this subject. There are facts, data and knowledge that will provide information directly related to this topic, providing a better understanding of the answer to this very important question.

Principle Star Types Based on Temperature

From a working amateur astronomical observatory in Ellicott City, MD, Bluebird Observatory, provides original content and many links as a major resource for backyard astronomy.

Featured Link - As seen in the Sept/Oct '05 nightsky magazine
The Green Flash Explained
Described by Andrew T. Young at San Diego State on his award winning web pages: "Green flashes are real phenomena seen at sunrise and sunset, when some part of the Sun suddenly changes color... The word "flash" refers to the sudden appearance and brief duration of this green color, which usually lasts only a second or two at moderate latitudes. As the area that turns green is ordinarily near the limit of the eye's resolution, these are sometimes called "green dot" displays."


If you are interested in learning more about our Solar System, Planets, Galaxys and Space in general, there is literally a mountain of useful and interesting web links available. You can search the various directories and Search Engines for more, or more specific information, but here are a few we like for overall coverage of the topics from different viewpoints:

ASTRONOMY Magazine's Website -
Lots of information and educational material about astronomy and space plus a free newsletter!

ESA-The European Space Agency Space Science area
Space News, Links to a huge website including the missions ongoing and planned by ESA, in-depth space sciences, images, videos, glossaries, FAQS and downloads.

Meade's Universe
Space News, image galleries, Monthly Astro happenings and more. Plus it is a great gateway to the extensive Meade products area. See just what kinds of amazing telescopes and computer devices that are available these days for your own exploration of outer space. It is out there and until you have seen the the mountains on the Moon, the rings of Saturn or the bands on Jupiter with your own eyes, you will have been missing a great deal.

NASA's Exploring The Universe Website
More information and educational material about space and NASA's programs There are also several education areas on other NASA sites that teach, at various levels, about the sciences involved in exploring and understanding the physical universe. You can link to most of them plus stay updated on space news from this site.

Orion Telescopes' Learning Center
More educational material about astronomy and space and optical instruments.

Sky and Telescope
Headquartered in Cambridge, Massachusetts, near the Harvard-Smithsonian Center for Astrophysics. In addition to Sky & Telescope magazine and SkyandTelescope.com, this outfit, Sky Publishing, publishes Night Sky, a bimonthly magazine for beginners, two annuals (SkyWatch and Beautiful Universe), as well as books, star atlases, prints, globes, and other astronomy products. This site is aimed at the science and hobby of astronomy with links to many free resources, like software from articles in their publications, and lots of informative artices and data on astronomy and the related sciences.

An interesting website that's been around since 1999 with lots of info on space and more. It is run by the media company that recently purchased Orion Telescopes and also is the publisher of the popularly-priced astronomy software "Starry Night".

Below is the latest astronomy headlines courtesy of Space.com's RSS Newsfeed in Javascript (JS). If you do not have a JS-enabled browser, visit Space.com's news page.

Astronomy Headlines from SPACE.com

Good luck and best wishes. If you have some interesting success, let us know and we'll help you share that with others who visit these pages.

(to be continued- so come back now and then to see what's new)

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There are also FREE, self self service listing options aplenty at TempSensor.net, The Temperature Community website, our growing newsblog and super vendors' directory.

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