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Last updated on April 23, 2014 at 1:22 EDT

Latest Stellar astronomy Stories

Crowded Star Clusters Defy Simple View Of Gravity
2013-02-21 09:00:07

April Flowers for redOrbit.com - Your Universe Online On large astronomical scales, gravity remains the dominant force acting on heavenly bodies, from asteroids and exoplanets to solar systems and supermassive black holes. But when it comes to young stars in clustered galaxies, researchers have found that the dynamics of these crowded environments cannot be fully accounted for by simple understanding of gravity. A new study, led by the“¯Kavli Institute for Astronomy and...

Protostar’s Fireworks Captured By NASA’s Hubble
2013-02-07 18:52:43

Lee Rannals for redOrbit.com — Your Universe Online [ Watch the Video: Light echoes from LRLL 54361 ] A strange beacon of light has been captured, for the third time, using NASA´s Hubble Space Telescope. Far away, on a protostar called LRLL 54361, a flashing light takes place every 25.34 days, like fireworks. New images and video released by NASA and taken by the Hubble show the cause of these fireworks can bee seen hidden behind a dense disc and an envelope of dust....

2013-02-07 12:22:15

WASHINGTON, Feb. 7, 2013 /PRNewswire-USNewswire/ -- Two of NASA's great observatories, the Spitzer and Hubble space telescopes, have teamed up to uncover a mysterious infant star that behaves like a strobe light. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Every 25.34 days, the object, designated LRLL 54361, unleashes a burst of light. Although a similar phenomenon has been observed in two other young stellar objects, this is the most powerful such beacon seen to date....

Solar Winds Examined By XMM-Newton
2013-02-05 18:03:01

Lee Rannals for redOrbit.com — Your Universe Online While solar wind is a common occurrence in our Solar System, a study of a new, more fierce wind has been completed using the European Space Agency's XMM-Newton space observatory. These massive stellar winds derive from rare, giant stars which burn their nuclear fuel more rapidly than stars like the Sun, and that live for millions of years before exploding into a supernova. Massive stars lose a significant fraction of their...

Sun Surface Cooler Than Previously Thought
2013-02-04 19:27:46

Lee Rannals for redOrbit.com — Your Universe Online One who didn't know better would think that the closer you get to the sun, the warmer you are. However, it is actually the outer edge of the sun that you would find to be scorching, compared to the surface, and one study sought to find out why. Scientists from Northumbria University wrote in the journal Nature Communications that they used solar-imaging technology to observe the Sun's chromosphere, which is a region of the Sun's...

TW Hydrae Protoplanetary Disk Weighed With Unprecedented Accuracy
2013-01-30 13:26:09

Lee Rannals for redOrbit.com - Your Universe Online Astronomers recently reported in the journal Nature that they have determined the mass of the planetary nursery surrounding the star TW Hydrae with unprecedented accuracy. TW Hydrae lies roughly 176 light-years away from Earth and is one of the most frequently observed protoplanetary disks in space. The young star is surrounded with a disk of dense gas and dust, in which larger objects begin to turn into planets. Our Solar System...

Study Reveals Secrets Of Binary Stars Through Red Explosions
2013-01-25 11:12:34

April Flowers for redOrbit.com - Your Universe Online Astrophysicists have debated the outcome of two binary stars — stars that orbit each other — coming together in a "common envelope" for a long time. A new study from the University of Alberta has finally provided some answers. Theoretical astrophysicist Natalia Ivanova has revealed the workings of a celestial event that produces an explosion so powerful its luminosity approaches that of a supernova. “When this...

New Image Shows Off Star Birth Region In Orion
2013-01-23 05:14:35

Lee Rannals for redOrbit.com - Your Universe Online A new image released by the European Space Observatory (ESO) shows off a great view of clouds of cosmic dust in Orion. ESO's Atacama Pathfinder Experiment (APEX) telescope in Chile helps bring out the heat glow of the dust, revealing places where new stars are being formed. Dense clouds of cosmic gas and dust in space are the birthplaces of new stars. When viewing these in visible light, the dust is dark and obscuring, which helps...

Galactic Superwinds Power Up Gas Clouds In M82
2013-01-19 08:00:41

redOrbit Staff & Wire Reports - Your Universe Online Shockwaves originating from the central starburst region of galaxy Messier 82 (M82) are most likely the source of bright clouds within a “cap” of gas clouds located some 40,000 light years away, astronomers have discovered. Kyoto University´s Dr. Kazuya Matsubayshi and an international team of colleagues observed the nearby starburst galaxy, which is located approximately 12 million light-years away in the...

Astronomers Capture Rare Glimpse Of Star-Forming Region In Visible Light
2013-01-16 07:00:46

[Watch Videos: 1 - Zooming in on Lupus 3 / 2 - Panning Over Lupus 3] Lawrence LeBlond for redOrbit.com - Your Universe Online The European Southern Observatory (ESO) released a stunning new image of a dark cloud where new stars are forming, along with a cluster of brilliant stars that have already emerged from the stellar nursery. The new image, taken with MPG/ESO 2.2-meter telescope at La Silla Observatory in Chile, is one of the finest and clearest ever taken in visible light of...


Latest Stellar astronomy 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...

7_4b235c0bfbfc8504a41844f9c48ad8962
2004-10-19 04:45:43

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...

6_dac4e7d6b8fb5cf3a1458d796b90d7a92
2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

6_eb1c58e78fe764237148429a189b17e92
2004-10-19 04:45:42

Star Formation -- Star formation is the process by which gas in molecular clouds gets transformed into stars. In the current paradigm of star formation, cores of molecular clouds (regions of specially high density) became gravitationally unstable, and start to concentrate. Part of the gravitational energy lost in the process is radiated in the infrared, another part increases the temperature of the core. The accretion of material happen partially though a circumstellar disc. When...

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2004-10-19 04:45:42

Star Designation -- The International Astronomical Union (IAU) is the internationally recognised authority for assigning designations to stars (and other celestial bodies). Many of the star names in use today were inherited from the time before the IAU existed. Other names, mainly for variable stars (including novae and supernovae), are being added all the time. Most stars, however, have no name and are referred to, if at all, by means of catalogue numbers. This article briefly...

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