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Latest Star types Stories

Future Space Missions Could Rely On Pulsars For Navigation
2013-08-21 13:36:21

Lee Rannals for redOrbit.com - Your Universe Online Scientists at Commonwealth Scientific and Industrial Research Organization (CSIRO) are developing a new GPS method for spacecraft using pulsars. Pulsars are small spinning stars that emit regular pulses of radio waves and sometimes X-rays. CSIRO astronomers measure when these pulsar pulses arrive in our Solar System. This data can be used to give clues about the behavior of a pulsar itself or whether it is orbiting another star. Dr...

Nova Visible With Naked Eye
2013-08-20 10:36:11

John P. Millis, PhD for redOrbit.com - Your Universe Online White dwarfs – small balls of carbon and oxygen, the core remnants of Sun-like stars that reached the ends of their lives – give off a soft glow of light, slowly fading as the heat from their surfaces escapes into the coldness of space. These dead cores will eventually dim and cool, as nuclear fusion has long ceased. However, there are some that live on. These white dwarfs orbit in close binary systems with another star. If...

Odd Magnetar Has A Very Strong Magnetic Field
2013-08-15 04:36:30

redOrbit Staff & Wire Reports - Your Universe Online An odd type of neutron star located approximately 6,500 light years from Earth has one of the strongest magnetic fields in the universe – despite previous suggestions it possessed an unusually low magnetic field. Using the European Space Agency’s (ESA) XMM-Newton space telescope, a team of astronomers studied the object, a magnetar known as SGR 0418+5729 (SGR 0418). This dense and compact object, which is the dead core of a...

Highly Magnetized Pulsar At Galactic Center
2013-08-14 12:20:25

John P. Millis, PhD for redOrbit.com - Your Universe Online At the center of the Milky Way lurks a supermassive black hole known as Sagittarius A*, with some four million times the mass of our Sun. More than any single object, it has the greatest impact on the formation, evolution and fate of our galaxy. However, probing this massive object is difficult. Due to the nature of black holes, most of what we learn about their existence is derived by observing their influence on other nearby...

Heavy Metal Stars
2013-08-01 14:00:20

Lee Rannals for redOrbit.com - Your Universe Online Astronomers from the Armagh Observatory in Northern Ireland say they have discovered two unusual, heavy metal stars. The team wrote in the journal Monthly Notices of the Royal Astronomical Society that they found the stars HE 2359-2844 and HE 1256-2738 to contain extremely high concentrations of lead in their atmospheres. Naslim Neelamkodan, Simon Jeffery, Natalie Behara and Alan Hibbert said these two stars have surfaces containing...

The Largest Magnetic Fields In The Universe
2013-07-29 04:11:34

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online Gamma-ray bursts (GRBs) are thought to be the most powerful, energetic events in the Universe. They can release as much energy in one second as an entire galaxy expels in an entire year. But while astronomers have some solid theories on what drives these events, many of the details are still widely debated. One of the complicating matters comes from the fact GRBs appear to fall into two separate classes: long and short burst...

I Love Q Formula Insights Into Universe
2013-07-26 11:51:21

April Flowers for redOrbit.com - Your Universe Online Without understanding the internal structure in detail, it is still possible for scientists to learn a tremendous amount about neutron stars and quark stars, according to a new study from researchers at Montana State University. "The stars could be the softest or the hardest in their kind, and it wouldn't matter," said Nico Yunes, assistant professor in MSU's Department of Physics. Yunes and his colleague, postdoctoral scholar Kent...

Monstrous Stellar Collisions Not Expected To Occur Anytime Soon
2013-07-11 14:32:31

Lee Rannals for redOrbit.com - Your Universe Online Astrophysicists from the Astronomical Observatory of the Faculty of Physics at the University of Warsaw say the next collision of monstrous stars will not occur until billions of years from now. Three years ago, scientists discovered that the Magellanic Clouds host gigantic stars with between 200 and 300 times the solar mass  of our own Sun. Before then, astronomers believed that the biggest stars in the Universe did not...

Bursts Of Cosmic Radio Waves May Be From The Beginning Of The Universe
2013-07-05 05:13:51

[ Watch the Video: A Population of Fast Radio Bursts at Cosmological Distances ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers writing in the journal Science say they recently discovered mysterious bursts of radio waves originating from billions of light-years away. The scientists have already ruled out the possibility the bursts came from terrestrial sources. Based on the brightness and distance of the four radio waves, the researchers conclude they come from a...


Latest Star types Reference Libraries

7_d6897d09acee1dd0c34d0fbf62ff7d0b2
2004-10-19 04:45:44

X-Ray Astronomy -- Although the more energetic X-rays (E > 30 keV) can penetrate the air at least for distances of a few meters (they would never have been detected and medical X-ray machines would not work if this was not the case) the Earth's atmosphere is thick enough that virtually none are able to penetrate from outer space all the way to the Earth's surface. X-rays in the 0.5 - 5 keV range, where most celestial sources give off the bulk of their energy, can be stopped by a few...

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_f90ed86f2fe38a60d6f89c02ad7d21082
2004-10-19 04:45:43

X-ray Pulsar -- This dramatic artist's vision shows a city-sized neutron star centered in a disk of hot plasma drawn from its enfeebled red companion star. Ravenously accreting material from the disk, the neutron star spins faster and faster emitting powerful particle beams and pulses of X-rays as it rotates 400 times a second. Could such a bizarre and inhospitable star system really exist in our Universe? Based on data from the orbiting Rossi X-Ray Timing Explorer (RXTE) satellite,...

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_48ed76f36ff2f4ed0ad83a22964029652
2004-10-19 04:45:43

X-ray Binaries -- X-ray binaries are a class of binary stars that are very luminous in X-rays. The X-rays are produced by matter falling from one component (usually a relatively normal star) to the other component, which is a neutron star or a black hole. The infalling matter releases gravitational potential energy, up to several tens of per cent of its rest mass as X-rays. (Hydrogen fusion releases about 0.7 per cent of rest mass) X-ray binaries are further subdivided into...

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Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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