Latest Star Stories
Astronomers using NASA's Hubble Space Telescope have uncovered surprising new clues about a hefty, rapidly aging star whose behavior has never been seen before in our Milky Way galaxy. Astronomers have nicknamed it 'Nasty 1', a play on its catalog name of NaSt1.
While type Ia supernovae are commonly used to locate dark energy in the universe, their origins have remained somewhat mysterious.
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Every so often, readers submit questions to our "Ask the Astronomer" series, wondering various things about the universe, space travel, or complex physics concepts we have no freaking answer for. Thankfully, when this happens, we have a few resident astronomers always willing to jump in and help us out--like professor of astronomy at Vanderbilt University, Dr. David Weintraub.
For the first time, astronomers have produced a fully 3D view of the Pillars of Creation using the Very Large Telescope to capture the iconic billowing dust pillars in new detail and discover never-before-seen features.
MUMBAI, April 30, 2015 /PRNewswire/ -- The wait is over. It's a momentous day in the history of Indian television that will change how content consumption
Asbury Park School District partners with Scholastic to support a comprehensive, community-wide initiative to accelerate student success rates, starting with reading skills ASBURY PARK, N.J.,
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 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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