Latest Star Stories
Thanks to the NASA/ESA Hubble Space Telescope, some of the most mysterious cosmic residents have just become even more puzzling.
New Mobile Web Service Offers Convenience & Personalized Perks for Guests While Empowering Hotels to Build Direct Guest Relationships MONTREAL, Nov.
APPLE VALLEY, Minn., Oct. 30, 2014 /PRNewswire/ -- The South Dakota Department of Education has chosen Questar Assessment Inc.
New analysis of high energy blasts from a magnetar has resulted in the discovery of underlying signals related to seismic waves rippling throughout the highly magnetized neutron star.
Guide is first standards book published by organization and is designed to give readers a consistent, effective way to approach the planning and building of hydrothermal areas. New
APPLE VALLEY, Minn., Oct. 8, 2014 /PRNewswire/ -- Questar Assessment, Inc.
NEW YORK, Oct. 7, 2014 /PRNewswire/ -- American Media, Inc.
Learning Ovations will receive $1.05 million to develop its cloud-based tool for enhancing literacy instruction Scottsdale, Ariz.
The strongest, hottest and longest-lasting sequence of stellar flares ever seen from a nearby red dwarf star was detected by NASA's Swift satellite on April 23.
Sands Technologies today announced they are looking for teachers and curriculum developers to help them tweak their new M-Recruit™ software to help teachers shave hours off their time spent
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: -- Mira...
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