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Simulations Reveal An Unusual Death For Ancient Stars

Simulations Reveal An Unusual Death For Ancient Stars

Linda Vu, Berkeley Lab Computing Sciences Findings made possible with NERSC resources and Berkeley Lab Code Certain primordial stars—those between 55,000 and 56,000 times the mass of our Sun, or solar masses—may have died unusually. In...

Latest light sources Stories

2014-09-29 23:07:21

Longtime leader in commercial and industrial grade lighting equipment Larson Electronics continues its commitment to providing high grade lighting equipment to specialty markets with the release of a high intensity 400 watt LED light fixture that is a direct replacement for 1,000 watt metal halide fixtures. Kemp, Texas (PRWEB) September 29, 2014 The GAU-LTL-400W-LED fixture from Larson Electronics produces 52,000 lumens of high intensity light while drawing only 400 watts from a 120 volt...

mars and the sun
2014-09-24 07:50:31

Karen C. Fox, NASA's Goddard Space Flight Center Two main types of explosions occur on the sun: solar flares and coronal mass ejections. Unlike the energy and X-rays produced in a solar flare – which can reach Earth at the speed of light in eight minutes – coronal mass ejections are giant clouds of solar material that take one to three days to reach Earth. Once at Earth, these ejections, also called CMEs, can impact satellites in space or interfere with radio communications. During CME...

The Difference Between Flares And CMEs
2014-09-23 03:49:47

[ Watch The Video: The Difference Between CMEs And Solar Flares ] Max Gleber, NASA There are many kinds of eruptions on the sun. Solar flares and coronal mass ejections both involve gigantic explosions of energy, but are otherwise quite different. The two phenomena do sometimes occur at the same time – indeed the strongest flares are almost always correlated with coronal mass ejections – but they emit different things, they look and travel differently, and they have different...

NASA Releases Interface Region Imaging Spectrograph Footage Of X-class Flare
2014-09-18 03:30:06

Karen Fox, NASA On Sept. 10, 2014, NASA's newest solar observatory, the Interface Region Imaging Spectrograph, or IRIS, mission joined other telescopes to witness an X-class flare – an example of one of the strongest solar flares -- on the sun. Combing observations from more than one telescope helps create a much more complete picture of such events on our closest star. Watch the movie to see how the flare appears different through the eyes of IRIS than it does through NASA's Solar...

2014-09-17 23:07:47

Leading manufacturer and supplier of explosion proof lighting equipment Larson Electronics has announced the release of a new pedestal mount LED work light configured to work on 24 volts DC or AC. The EPL-PM-150LED-24V-100 LED light can illuminate up to 10,000 square feet of work space and features a convenient pedestal mount base stand for easy handling and operation. Kemp, Texas (PRWEB) September 17, 2014 The EPL-PM-150LED-24V-100 explosion proof LED light from Larson Electronics is...

Type Ia supernova
2014-09-14 04:24:52

Chuck Bednar for redOrbit.com - Your Universe Online Less than two months after it first began repeatedly scanning the sky, the ESA’s Gaia space observatory has discovered its first supernova – a powerful stellar explosion that had occurred in a distant galaxy located some 500 million light-years from Earth, the agency announced on Friday. According to the ESA, the supernova was located during a sudden rise in the galaxy’s brightness that occurred between two Gaia observations...

2014-09-12 23:04:26

Larson Electronics has developed a new 23 watt dimmable LED tube lamp that is an excellent choice for upgrading existing T8 dimming fluorescent lamp fixtures as well as a direct replacement for our LED light fixtures. Kemp, Texas (PRWEB) September 12, 2014 The LEDT8-48-D 23 watt T-series LED bulb from Larson Electronics works with any T8 fluorescent light fixtures, can be configured for any T series fluorescent bulb fixture and requires no ballast for operation. Power for this dimmable...

2014-09-12 08:26:44

PLYMOUTH, Mich. and HAMBURG, Germany, Sept. 12, 2014 /PRNewswire/ -- ROFIN-SINAR Technologies Inc. (NASDAQ: RSTI), one of the world's leading developers and manufacturers of high-performance laser beam sources and laser-based solutions, today announced that Chief Executive Officer, Gunther Braun, will participate in the 5(th) Annual Credit Suisse Small & Mid Cap Conference to be held in New York, NY, on Tuesday, September 16, 2014. The Company's most recent investor presentation...

supernova puzzle 1
2014-09-11 03:00:38

Marina Komori, University of Tokyo A team led by Gastón Folatelli at the Kavli IPMU, the University of Tokyo, has found evidence of a hot binary companion star to a yellow supergiant star, which had become a bright supernova. The existence of the companion star had been predicted by the same team on the basis of numerical calculations. This finding provides the last link in a chain of observations that have so far supported the team's theoretical picture for this supernova. The results...

2014-09-10 23:03:20

Dr. Petrus Martens, a professor in the Department of Physics and Astronomy at Georgia State University, has received a three-year, $1.2 million NASA Grand Challenge grant to develop a system to predict solar cycles and determine the long-term frequency of events such as solar flares, potentially more than a decade in advance. (PRWEB) September 10, 2014 Dr. Petrus Martens, a professor in the Department of Physics and Astronomy at Georgia State University, has received a three-year, $1.2...


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
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'