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Latest light sources Stories

2014-08-06 12:22:15

WASHINGTON, Aug. 6, 2014 /PRNewswire-USNewswire/ -- Using NASA's Hubble Space Telescope, a team of astronomers has spotted a star system that could have left behind a "zombie star" after an unusually weak supernova explosion. http://photos.prnewswire.com/prnvar/20081007/38461LOGO A supernova typically obliterates the exploding white dwarf, or dying star. On this occasion, scientists believe this faint supernova may have left behind a surviving portion of the dwarf star -- a sort of...

sun EUNIS mission
2014-08-04 03:10:08

Karen C. Fox, NASA's Goddard Space Flight Center Scientists have recently gathered some of the strongest evidence to date to explain what makes the sun's outer atmosphere so much hotter than its surface. The new observations of the small-scale extremely hot temperatures are consistent with only one current theory: something called nanoflares – a constant peppering of impulsive bursts of heating, none of which can be individually detected -- provide the mysterious extra heat. [ Watch:...

solar flare
2014-08-03 04:01:03

April Flowers for redOrbit.com - Your Universe Online University of Bristol’s professor of Aerospace Engineering Ashley Dale cautions that “solar super-storms” are going to cause “catastrophic” and “long-lasting” impacts if we continue to ignore the threat of such storms. Dale is a member of the international task force SolarMAX, which was designed to identify the risks of a solar storm and how humanity could minimize the risks. He believes that a particularly violent...

white dwarf star in V407 Cygni
2014-07-31 16:20:44

J.D. Harrington, NASA Headquarters Observations by NASA's Fermi Gamma-ray Space Telescope of several stellar eruptions, called novae, firmly establish these relatively common outbursts almost always produce gamma rays, the most energetic form of light. "There's a saying that one is a fluke, two is a coincidence, and three is a class, and we're now at four novae and counting with Fermi," said Teddy Cheung, an astrophysicist at the Naval Research Laboratory in Washington, and the lead...

2014-07-29 08:26:07

Seven New OSRAM and SYLVANIA A-Line LED Products Now Available at Lowe's Stores DANVERS, Mass., July 29, 2014 /PRNewswire/ -- North American lighting leader OSRAM SYLVANIA announced an expanded LED product portfolio that will appear in Lowe's stores and includes seven new OSRAM and SYLVANIA ULTRA brand A-line LED products, the most commonly used type of light bulbs in households. Available on shelves this month, these new 40-, 60-, 75- and 100-watt replacement dimmable LED bulbs...

density of interstellar helium
2014-07-29 05:14:11

April Flowers for redOrbit.com - Your Universe Online For decades, scientists have been debating over a fog of low-energy X-rays that has been observed over the entire sky. An international group of scientists has used a NASA-funded instrument to resolve this debate. The group refurbished detectors that were first flown on a NASA sounding rocket in the 1970s to confirm that much of this glow is generated by a region of million-degree interstellar plasma known as the local hot bubble (LHB)....

2014-07-24 08:38:06

PLYMOUTH, Mich. and HAMBURG, Germany, July 24, 2014 /PRNewswire/ -- ROFIN-SINAR Technologies Inc. (NASDAQ: RSTI), one of the world's leading developers and manufacturers of laser sources and laser-based solutions, confirmed today that its 2014 third quarter results for the period ended June 30, 2014, will be released on Thursday, August 7, 2014. Chief Executive Officer, Gunther Braun, and Chief Financial Officer, Ingrid Mittelstadt, will host a conference call at 8:00 AM (Pacific) /...

2014-07-23 23:18:51

Transparency Market Research has announced the addition of the "Global Energy Efficient Lighting Technology Market by Correlated Color Temperature (CCT), Application and Geography 2013- 2018" report to their offering. Browse the full report: http://www.transparencymarketresearch.com/emerging-lighting-technology-market-by-color-temperature.html. Albany, New York (PRWEB) July 22, 2014 A new market research report published by Transparency Market Research based on “Global...

chandra 15th anniversary
2014-07-23 04:08:50

April Flowers for redOrbit.com - Your Universe Online NASA's Space Shuttle Columbia carried the Chandra X-ray Observatory into space 15 years ago, deploying it on July 23, 1999. Chandra, along with the other "Great Observatories" like Hubble and Spitzer, has helped to revolutionize the way we view the Universe using an unprecedented X-ray vision. "Chandra changed the way we do astronomy. It showed that precision observation of the X-rays from cosmic sources is critical to understanding...

2014-07-21 23:06:18

Longtime leader in commercial and industrial grade lighting equipment Larson Electronics has announced the release of a New 320 watt high intensity LED light that is ideal for use in mining applications as well as heavy equipment, hunting, boating, vehicle, military, law enforcement, and industrial manufacturing uses. Kemp, TX (PRWEB) July 21, 2014 The LED10WSA-320 LED light released by Larson Electronics produces 29,446 lumens of light output while drawing only 320 watts at 12.53 amps...


Latest light sources Reference Libraries

Stellar Astrophysics
2014-01-12 00:00:00

The prominent feature that allows for the existence of life on Earth is the Sun. Radiation from our closest star provides heat and energy to our planet, driving biological processes and providing the necessary conditions for liquid water to naturally exist. But our Sun is only but one star in this vast Universe. And as it turns out, most stars are quite different than the one that illuminates our day. For this reason, scientists have, for hundreds of years, attempted to study the other...

4_a9775d2328a386c7976f6f9895c6d2ac2
2004-10-19 04:45:40

The Sun -- intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits. The sun is actually a star of about medium size; it appears larger than the other stars because of its relative nearness to the earth. The earth's distance from the sun varies from 91,377,000 mi (147,053,000 km) at perihelion to 94,537,000 mi (152,138,000 km) at aphelion (see apsis). The...

3_5b8f828cdf6b44752884e721c0a2e6bd2
2004-10-19 04:45:40

Crab Nebula -- The Crab Nebula (Messier 1, NGC 1952) is the object the which started Charles Messier logging non-cometary objects on his Messier Catalog. It is the expanding cloud of gas thrown off in the explosion that gave rise to the 1054 supernova recorded by Chinese astronomers, now more than 6 light years across (the nebula is currently expanding at 1000 km/sec and the total mass of ejected material is about 0.1 solar masses). The supernova which produced it was bright enough to...

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Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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