Composite Image Shows Emissions Driven By Black Hole
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Astronomy is more than merely using optical telescopes to take pretty pictures of distant nebulae and galaxies. Researchers also seek to understand complex systems in the universe...
Latest Star Stories
DALLAS, May 16, 2013 /PRNewswire/ -- Voyager Learning, a business unit of Cambium Learning(®) Group (NASDAQ: ABCD), a leading educational solutions and services company committed to helping all students reach their full potential by providing evidence-based solutions and services, announced today the release of Read Well(®) 3. The newest addition to the popular core or core-replacement Read Well K-2 series, Read Well 3 is a mastery-based reading and language arts solution that...
NEW YORK, May 10, 2013 /PRNewswire/ -- American Media, Inc. (AMI), today announced that Shape Editor-in-Chief, Tara Kraft, has been appointed Vice President and Group Editorial Director for AMI's Womens' Active Lifestyle Group. In addition to her Editor-in-Chief role at Shape, Ms. Kraft will oversee Fit Pregnancy, the only mainstream title devoted exclusively to fitness and health for pregnant women, and Natural Health, an organic lifestyle magazine. "Lifestyle and fitness...
Entertainment Studios is One of the Largest Providers of Content on YouTube's New Paid Channel Platform LOS ANGELES, May 9, 2013 /PRNewswire/ -- Entertainment Studios, Inc., (www.es.tv) the largest independent producer and distributor of first-run syndicated television programming for broadcast television stations, and owner of eight 24-hour HD cable television networks, proudly announces the launch of eight new paid channels on YouTube. These paid channels from Entertainment Studios are...
WASHINGTON, May 9, 2013 /PRNewswire-USNewswire/ -- NASA's Hubble Space Telescope has found the building blocks for Earth-sized planets in an unlikely place -- the atmospheres of a pair of burned-out stars called white dwarfs. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO ) These dead stars are located 150 light-years from Earth in a relatively young star cluster, Hyades, in the constellation Taurus. The star cluster is only 625 million years old. The white dwarfs are...
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Stars sustain themselves by fusing elements in their core, producing even heavier atoms, releasing energy that keeps the immense force of gravity at bay. But eventually, the fusion process will no longer produce enough outward radiation pressure to sustain the star, and it will begin to collapse in on itself. In the grandest of cases, the progenitor is a truly massive object, perhaps tens or hundreds of times the mass of...
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online One challenge of ground-based optical astronomy is that photons in this regime, and nearby infrared and ultraviolet bands, get refracted in our atmosphere. The consequence is that imaging of astronomical objects can be blurred, making it difficult to identify and characterize individual objects. Compensating for these effects can be tricky though, as our atmosphere is not a static system. Rather, it is in a state of...
Save up to 50% on a hotel room without bidding NORWALK, Conn., May 1, 2013 /PRNewswire/ -- Word is spreading about priceline.com's (Nasdaq: PCLN) popular Express Deals(sm) - a different hotel booking option for guests who want that juicy priceline.com discount, but without the bidding. Today, priceline.com announced its Ready. Set. Summer Sale!, where Express Deals hotels are available for up to half off normal published rates. This limited-time sale applies to hotels in all star...
Lee Rannals for redOrbit.com - Your Universe Online The European Space Agency's (ESA) Herschel observatory has officially run out of liquid coolant, ending its mission. The space observatory launched nearly four years ago with a goal to help reveal some of the cooler sides of the universe, including planet, star and galaxy formation. "Herschel gave us the opportunity to peer into the dark and cold regions of the universe that are invisible to other telescopes," said John Grunsfel,...
31 Hotels and Spas in London honoured, including 6 hotels and 2 spas achieving Forbes Travel Guide's coveted Five Star Rating LONDON, April 25, 2013 /PRNewswire/ -- Forbes Travel Guide has today announced its expansion into Europe, bringing its globally recognised Star Rating programme to central London's top hotels and spas. Six hotels and two hotel spas have been awarded the coveted Forbes Travel Guide Five-Star rating. These properties join an elite group of 76 hotels and 35 spas...
Lee Rannals for redOrbit.com – Your Universe Online Astronomers have snapped a very detailed image of the outer atmosphere of the red supergiant Betelgeuse. This star is the nearest red supergiant to Earth, easily visible to the unaided eye sitting on the top left shoulder of Orion the Hunter. Betelgeuse is about 1,000 times larger than our Sun and lies about 650 light years away from Earth. Astronomers took a new image with the e-MERLIN radio telescope array operated from the...
Latest Star Reference Libraries
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...
UV Astronomy -- UV astronomy is the branch of astronomy and astrophysics which deals with objects visible in ultraviolet (UV) radiation. UV radiation ranges approximatively from 10nm (extreme UV) to 380nm (near UV). Ultraviolet line spectrum measurements are used to discern the chemical composition, densities, and temperatures of interstellar medium, and the temperature and composition of hot young stars. UV observations can also provide essential information about the evolution of...
Hertzsprung-Russell Diagram -- In stellar astronomy, the Hertzsprung-Russell diagram (H-R diagram) shows the relation between the absolute magnitude and the spectral types of stars. It was invented around 1910 by Ejnar Hertzsprung and Henry Norris Russell. There are two equivalent forms. One is the observer's form which plots the color of the star on one axis and the absolute magnitude on the other axis. The theoretician's form plots the temperature of the star on one axis and the...
X-ray Burster -- X-ray bursters are a class of binary stars which are luminous in X-rays. They contain a neutron star and a low-mass companion star. The companion fills its Roche lobe and therefore the neutron star is accreting matter from it. The inflowing gas forms an accretion disk around the neutron star. Sometimes X-ray bursters show a sudden increase in their X-ray luminosity, called X-ray burst. All properties of the X-ray bursts can be explained assuming that they result from...
Variable Star -- Most stars are of nearly constant luminosity. Our own Sun is a good example which goes through practically no measurable variation in brightness. There are, however, stars which do vary in brightness, called variable stars. They fall into two main groups: Intrinsic variables These are stars which have intrinsic variations in brightness, that is the star itself gets brighter and dimmer. There are many types of intrinsic variables, the main types being: --...
