Latest light sources Stories
Astronomers found that the type of supernovae commonly used to measure distances in the universe fall into distinct populations not recognized before, and this questions how fast the universe has been expanding.
The Sun undergoes a type of seasonal variability with its activity waxing and waning over the course of nearly two years, according to new research led by NCAR.
Our Sun goes through a few activity cycles and a new study has identified one such cycle that is almost seasonal in nature. According to the report, published in the journal Nature Communications, the nearly two-year cycle appears to be caused by shifts in the bands of powerful magnetic fields in each solar hemisphere. These bands also aid in shaping and approximately 11-year solar cycle that is part of a lengthier cycle that lasts approximately 22 years.
NASA studied the 'crime scene' left behind from an explosion of an Ia supernova and discovered that a single white dwarf star is to blame.
Customers wanting brighter household LED light bulbs will be pleased to find new 125W-equal A-shape LEDs at 1000Bulbs.com. Garland, Texas (PRWEB) March 31, 2015
Dark energy is so difficult to understand, but this specific type of supernovae could help determine the rate at which the universe is expanding.
NASA and the ESA are hoping that a pair of satellites currently in development will solve some of the longstanding mysteries of the sun by getting up close and personal with our solar system’s host star, provided they can survive the extreme heat and harsh conditions.
New product release from DSA Phototech offers innovative LED technology combined with affordability. CARSON, Calif., March 25, 2015 /PRNewswire/ -- DSA Phototech is proud to announce
GIA announces the release of a comprehensive global report on Traditional Incandescent Bulbs.
A mysterious explosion in the sky observed in the 17th century was not a nova, but a much rarer, violent stellar collision.
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...
Supernova -- A supernova is a star that increases its brightness drastically within a matter of days, making it appear as if a "new" star was born (hence "nova"). The "super" prefix distinguishes it from a mere nova, which also involves a star increasing in brightness, though to a lesser extent and through a much different mechanism. Astronomers have classified supernovae in several classes, according to the lines of different elements that appear in their spectra. The first element...
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...
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...