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Last updated on April 20, 2014 at 19:30 EDT

Latest Stellar classification Stories

Astronomers Discover Hypergiant Star 1300 Times The Size Of Our Sun
2014-03-12 12:34:41

[ Watch the Video: Artist's Impression of Yellow Hypergiant Star HR 5171 ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers using the European Southern Observatory’s (ESO) Very Large Telescope have discovered the largest yellow star so far. The team discovered yellow hypergiant star HR 5171 in a double star system about 12,000 light-years away from Earth. The star is so huge that it can just about be seen with the naked eye, despite its distance from Earth. “The...

Storms As Big As Jupiter's 'Great Red Spot' Found On Brown Dwarfs
2014-01-07 11:57:11

[ Watch the Video: Torrential Storm Clouds On Brown Dwarfs ] Lee Rannals for redOrbit.com - Your Universe Online Most brown dwarfs may contain storms as big as Jupiter’s “Great Red Spot,” according to findings presented at the American Astronomical Society in Washington. Brown dwarfs are a form of star, but lack the mass to fuse atoms continually to turn themselves into a full-fledged star. The celestial bodies are like a cross between a Jupiter-sized gas planet and a star....

NASA Scientists Discover Cool Brown Dwarfs That Are Still Pretty Warm
2013-09-06 11:02:56

Brett Smith for redOrbit.com - Your Universe Online Two years ago NASA scientists revealed a new class of stars, dubbed ‘Y dwarfs,' thought to be about as warm as the human body. However, newly published research indicates that these cold stars are probably a bit warmer than the boiling point of water. These stars are believed to have a mass about 5 to 20 times that of Jupiter. Unlike our sun, these types of brown dwarf stars derive their energy via gravitational contraction, a...

Measuring Stellar Gravity
2013-08-23 08:58:22

[ Watch The Video: Star Flickering Discovery ] John P. Millis, PhD for redOrbit.com - Your Universe Online A star’s gravitational strength is key in understanding and modeling other properties of a particular star, to say nothing of understanding the planets that orbit around it. But making accurate measurements of a star’s surface gravity is difficult, and measurements are often only good to within about a 50% estimation of the actual value, sometimes worse. Now, however,...

New Image Of Betelgeuse Reveals Hot Spots
2013-04-24 19:23:35

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...

Most Massive Binary Candidate Identified
2013-04-17 04:52:37

April Flowers for redOrbit.com - Your Universe Online A team of astronomers, led by Hugues Sana of the University of Amsterdam, has observed a binary star that potentially weighed 300 to 400 times the mass of our Sun at its birth. The present day combined mass of the two stars is between 200 and 300 times the solar mass, depending on its evolutionary stage. This makes it potentially the most massive binary star discovered to date. The findings of this study have been published in...

Alpha Centauri B May Shed Light On Our Own Sun’s Anomalies
2013-02-20 12:52:10

Michael Harper for redOrbit.com — Your Universe Online As it turns out, studying our Sun can be rather difficult. It´s not the distance so much that keeps scientists guessing — although that certainly doesn´t help. The Sun´s intense heat also keeps scientists at bay, leaving them to make some of their observations and predictions based purely on context and far away measurements. One thing astronomers have been able to observe is a significant difference in...

Gaia Mission To Detect Ultra-cool Dwarfs In The Milky Way
2013-02-14 05:47:05

April Flowers for redOrbit.com - Your Universe Online There are small subsets of stars among the hundred billion in the Milky Way called ultra-cool dwarfs, which have a temperature below 2500 Kelvin. Both ultra-cool dwarfs and brown dwarfs exist at these lower temperatures. The lower temperatures indicate that these are some of the most ancient objects in our Galaxy, leading scientists to examine them for information on primitive chemical composition. The Gaia mission, which will be...

Betelgeuse Heading For Collision In 5,000 Years
2013-01-22 12:44:17

Lee Rannals for redOrbit.com - Your Universe Online A new image released by the European Space Agency (ESA) shows multiple arcs around Betelgeuse, the nearest red supergiant star to Earth. Betelgeuse and its arc-shaped shields could be colliding with a dusty "wall" in the next 5,000 years, according to ESA. The red supergiant star sits at the constellation Orion the Hunter, and can easily be seen with the naked eye in the northern hemisphere winter night sky as an orange-red star to...

2013-01-21 12:21:31

CHICAGO, Jan. 21, 2013 /PRNewswire/ -- With the most romantic day of the year just around the corner, the pressure to find the perfect gift that says "Our love was written in the stars" is on. Go beyond traditional flowers and costly diamonds with a uniquely sweet gift. Show that special someone how much you care by doing what the stars do, name a star after them. A favorite gift to give and receive, some past customers who have named stars include Steven Spielberg, Jamie Lee Curtis, Stevie...


Latest Stellar classification Reference Libraries

6_d67b2db586c7facec8388b5df78e57912
2004-10-19 04:45:42

Star -- A star is a self-gravitating sphere of plasma in hydrostatic equilibrium that generates energy in its interior through the process of nuclear fusion. Energy from this process radiates into space as electromagnetic radiation and neutrinos. Star formation and evolution As learned by star formation astronomers, stars are born in molecular clouds, regions of higher density of matter, and form by gravitational instability inside those clouds. High mass stars illuminate powerfully...

3_a997defc9ca7ea81c6bd4ed4bab88e3c2
2004-10-19 04:45:40

Vega -- Vega (Alpha Lyrae) is the lead star in the constellation Lyra, reaching near directly overhead the mid-northern latitudes, during the summer. It's a "nearby star" at only 25 light years distant and together with Arcturus and Sirius, one of the brightest stars in the Sun's neighbourhood. Vega is a vertex of the Summer Triangle. Its spectral class is A0V (Sirius, an A1V, is slightly less powerful) and it's firmly in the main sequence, fusing hydrogen to helium in its core....

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