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supernova puzzle 1
2014-09-11 03:00:38

Marina Komori, University of Tokyo A team led by Gastón Folatelli at the Kavli IPMU, the University of Tokyo, has found evidence of a hot binary companion star to a yellow supergiant star, which had become a bright supernova. The existence of the companion star had been predicted by the same team on the basis of numerical calculations. This finding provides the last link in a chain of observations that have so far supported the team's theoretical picture for this supernova. The results...

supernova 1993J
2014-09-10 04:07:05

April Flowers for redOrbit.com - Your Universe Online After two decades of searching, astronomers using NASA's Hubble Space Telescope have discovered a companion star to a rare type of supernova — confirming a long-held belief that supernova SN 1993J occurred inside of a binary system. A binary system involves two stars interacting with each other, and in this case, causing a cosmic explosion. "This is like a crime scene, and we finally identified the robber," said Alex Filippenko,...

2014-09-08 23:05:06

Partnership focused on using technology tools to increase sustainability and scalability of successful school-based literacy program Denver, CO. (PRWEB) September 08, 2014 Reading In Motion and CauseLabs today announced their partnership to pursue new ways of sustainability through technology tools so more teachers and schools can use the music and drama literacy program to inspire students to read at their full potential and start them on the path for a lifetime of successful learning....

Lupus 4
2014-09-04 06:52:11

Richard Hook, ESO Lupus 4, a spider-shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image. Although gloomy for now, dense pockets of material within clouds such as Lupus 4 are where new stars form and where they will later burst into radiant life. The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile captured this new picture. [ Watch the Video: A Close-Up View Of The Dark...

molecular cloud thinkstock 89614446
2014-09-01 04:34:43

Chuck Bednar for redOrbit.com - Your Universe Online Astrophysicists and computational astronomers from the University of California, Santa Cruz have discovered why sibling stars look alike – those formed from a single cloud share the same chemical fingerprint due to early, fast and turbulent mixing of gas in the giant molecular clouds where star formation occurs. Stars are made primarily of hydrogen and helium, but they also contain trace amounts of elements such as carbon, oxygen...

Eta Carinae
2014-08-27 05:41:19

NASA's Marshall Space Flight Center The Eta Carinae star system does not lack for superlatives. Not only does it contain one of the biggest and brightest stars in our galaxy, weighing at least 90 times the mass of the sun, it is also extremely volatile and is expected to have at least one supernova explosion in the future. [ Watch the Video: Eta Carinae: Our Neighboring Superstars ] As one of the first objects observed by NASA’s Chandra X-ray Observatory after its launch some 15...

Artist's impression of eclipsing binary
2014-08-23 03:00:07

Southern Methodist University Treasures of the night sky: Pairs of stars orbit around each other so closely their outer atmospheres touch, so they dim and brighten. Two Dallas high school students discovered five stars as members of an SMU summer physics research program that enabled them to analyze data gleaned from a high-powered telescope in the New Mexico desert. All five stars are eclipsing contact binary stars, pairs of stars that orbit around each other so closely that their...

toothpaste fluorine from space
2014-08-23 04:55:25

John Hopton for redOrbit.com - Your Universe Online From ancient, dying stars to our toothbrushes, the chemical element fluorine which is used in toothpaste was formed in stars of the same type as our sun billions of years ago, scientists from Lund University in Sweden believe. The formation happens towards the end of a star’s life, a point at which they have expanded, are heavier and are referred to as a red giant. Various chemical elements are created within the high pressure and...

Hypatia Catalog
2014-08-20 04:20:02

April Flowers for redOrbit.com - Your Universe Online The largest catalog ever assembled for stellar compositions was unveiled this week by Arizona State University (ASU) alumna Natalie Hinkle. Hinkle, who graduated in 2012 from ASU with a doctorate in astrophysics, named her project the Hypatia Catalog after one of the first female astronomers who lived ~350 AD in Alexandria. The catalog is described in an upcoming issue of The Astronomical Journal. The new catalog is critical to...

2014-08-19 16:24:06

NEW YORK, Aug. 19, 2014 /PRNewswire/ -- American Media, Inc. (AMI) today announced that it will hold an earnings conference call on August 20, 2014 at 4:00 p.m. EDT to discuss the financial results for Fiscal Year 2014 and the three month period ended June 30, 2014. AMI's Annual Report on Form 10-K for the fiscal year ended March 31, 2014 was filed with the Securities and Exchange Commission (SEC) on August 15, 2014. AMI's Quarterly Report on Form 10-Q for the quarter ended June 30,...


Latest Star 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_9d2e259c13e5a649c6295922288878812
2004-10-19 04:45:43

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...

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_1446abbc556d86191d7944d6c5cf68052
2004-10-19 04:45:43

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...

6_f1577ee462b741c03ef6a7d23d2cd6905
2004-10-19 04:45:43

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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Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.