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Latest Variable stars Stories

Hubble Images Variable Star's Light Echo
2013-12-18 04:42:49

[ Watch the Video: Light Echoes Around RS Puppis ] redOrbit Staff & Wire Reports - Your Universe Online Observations from the NASA/ESA Hubble Space Telescope, collected over the span of five weeks, show the variable star RS Puppis growing alternately brighter and dimmer – a phenomenon known as a light echo. Hubble monitored RS Puppis, which is ten times more massive and roughly 15,000 times more luminous than the sun, and captured it at different stages throughout its...

2013-07-23 08:29:45

SUNNYVALE, Calif., July 23, 2013 /PRNewswire/ -- Cepheid (Nasdaq: CPHD) and the American Lung Association (www.Lung.org) today announced a partnership to promote tuberculosis-related awareness in the U.S. and the need for improved TB (tuberculosis) diagnostics. Details of the planned program will be announced at the American Association of Clinical Chemistry and Clinical Lab Expo show in Houston, Texas. The live announcement will take place at 10am on July 30(th) at Cepheid...

Disk Patterns Not Always Formed In Presence Of Planets
2013-07-13 07:16:03

[WATCH VIDEO: It Doesn't Take A Planet To Make A Ring] April Flowers for redOrbit.com - Your Universe Online Young stars known to host planets generally also have disks containing dust and icy grains, particles produced by collisions among asteroids and comets also orbiting the star. Often, these debris disks have sharply-defined rings or spiral patterns, which could signal the presence of orbiting planets. As a way to better understand the physical properties of known planets and...

Hubble Captures Planet Formation 7.5 Billion Miles From Host Star
2013-06-13 15:09:54

Lee Rannals for redOrbit.com — Your Universe Online Astronomers using NASA's Hubble Space Telescope say they have discovered evidence of a planet forming 7.5 billion miles away from its host star. The exoplanet is under construction about 176 light-years away from Earth in the constellation Hydra the Sea Serpent. The suspected planet is orbiting the diminutive red dwarf TW Hydrae. "It's so intriguing to see a system like this," said John Debes of the Space Telescope Science...

2013-06-13 12:21:27

WASHINGTON, June 13, 2013 /PRNewswire-USNewswire/ -- Astronomers using NASA's Hubble Space Telescope have found compelling evidence of a planet forming 7.5 billion miles away from its star, a finding that may challenge current theories about planet formation. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Of the almost 900 planets outside our solar system that have been confirmed to date, this is the first to be found at such a great distance from its star. The suspected...

Mystery Of Nearby SS Cygni Star System Finally Resolved
2013-05-23 13:22:47

John P. Millis, PhD for redOrbit.com — Your Universe Online In 1990 the Hubble Space Telescope measured the distance to a nearby star system known as SS Cygni. Composed of a low-mass main sequence star and a compact object known as a white dwarf — a stellar remnant about the mass of our Sun, but compressed to the size of the Earth. The distance measured by Hubble puzzled scientists, as the measured brightness of the system was considerably higher than expected. If correct,...

2013-02-14 16:24:57

SUNNYVALE, Calif., Feb. 14, 2013 /PRNewswire/ -- Cepheid (Nasdaq: CPHD) today announced that its Board of Directors has elected John Bishop as Chairman of the Board of Directors and named Cristina Kepner as Lead Independent Director, effective February 12, 2013. Mr. Bishop, currently Cepheid's Chief Executive Officer, succeeds Thomas Gutshall, who will continue to serve on Cepheid's board as a director. Mr. Bishop has been Cepheid's Chief Executive Officer and a director since...

2013-01-30 16:20:09

WASHINGTON, Jan. 30, 2013 /PRNewswire-USNewswire/ -- A star thought to have passed the age at which it can form planets may in fact be creating new worlds. The disk of material surrounding the surprising star called TW Hydrae may be massive enough to make even more planets than we have in our own solar system. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The findings were made using the European Space Agency's Herschel Space Telescope, a mission in which NASA is a...

NASA Finds New Asteroid Belt Discovered Orbiting Vega
2013-01-09 15:11:09

redOrbit Staff & Wire Reports - Your Universe Online A team of U.S. astronomers has discovered what looks to be a large asteroid belt orbiting around Vega, the second-brightest star in the northern sky, NASA officials announced on Tuesday. Using data obtained from the Spitzer Space Telescope and the European Space Agency's (ESA) Herschel Space Observatory, the researchers discovered infrared light emitted by warm and cold dust in bands around both Vega and Fomalhaut, a second...

The Path To Planet Formation
2012-11-28 11:36:08

April Flowers for redOrbit.com - Your Universe Online A new study, using the capabilities of the Subaru Telescope, has captured a clear image of the protoplanetary disk of the star UX Tau A. An international team of researchers from the National Astronomical Observatory of Japan (NAOJ) and the Japanese universities of Kobe, Hyogo, and Saitama released a detailed study of the disk's characteristics, suggesting that its dust particles are large in size and non-spherical in shape. The...


Latest Variable stars Reference Libraries

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...

6_a3aacecdf36a21341c37345758866d252
2004-10-19 04:45:41

Binary Star -- A binary star system consists of two stars both orbiting around a gravitational point between them. The term "binary star" was apparently first coined by Sir William Herschel in 1802 to designate "a real double star - the union of two stars that are formed together in one system by the laws of attraction." At present, binary stars are classified into three types according to their observable properties: visual binaries, spectroscopic binaries, and eclipsing binaries....

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