Latest X-ray astronomy Stories

Chandra X-Ray Observatory Images Star-Making Cluster Cygnus OB2
2012-11-08 09:57:12

Lawrence LeBlond for redOrbit.com - Your Universe Online NASA has released a new image of the Cygnus OB2 star cluster, detailing its structure and evolution. The Milky Way, as well as other galaxies in the universe, are home to numerous young star clusters with hundreds of thousands of hot, massive, young stars known as O and B stars. Cygnus OB2 is one of these clusters that contains no less than 60 O-type stars and upwards of a thousand B-type stars. Using the Chandra X-Ray...

Bright Flare In A Black Hole
2012-11-06 19:14:34

Lee Rannals for redOrbit.com — Your Universe Online A team of scientists say they have detected the brightest flare ever observed in our galaxy's black hole. The astronomers used NASA´s Chandra X-Ray Observatory to detect the brightest flare ever observed from Sagittarius A*. The black hole is considered to be low-key, emitting very little energy for its size. It gives off about as much energy as the sun, despite it being 4 billion times as massive. The recent flare is...

NuSTAR Picks Up First Black Hole X-ray Flare Up
2012-10-24 10:43:45

Lee Rannals for redOrbit.com — Your Universe Online NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted its first flare from Milky Way's black hole. The new telescope, launched June 13, is the only telescope capable of producing focused images of the highest-energy X-rays, and NASA said it has caught its first look at the black hole. "We got lucky to have captured an outburst from the black hole during our observing campaign," Fiona Harrison, the mission's...

Milky Way Black Hole Ready For A Snack
2012-10-23 04:05:24

Lee Rannals for redOrbit.com - Your Universe Online Scientists have determined that the black hole in the middle of the Milky Way is getting ready to devour an approaching cloud of dust and gas. The researchers used a supercomputer simulation to determine that the cloud, known as G2, could possibly survive the encounter with the black hole, but its surviving mass would be torn apart and shaped differently. They came up with six simulations using Cosmos++ computer code, requiring more...

X-Ray Nova Reveals A Black Hole Surprise
2012-10-05 15:40:26

[ Watch the Video: X-ray Nova Reveals a New Black Hole in Our Galaxy ] Lee Rannals for redOrbit.com - Your Universe Online A new stellar-mass black hole has been discovered in our galaxy by NASA's Swift satellite. High-energy X-rays emanating from a source towards the center of our Milky Way galaxy were observed, indicating the presence of a previously unknown black hole. "Bright X-ray novae are so rare that they're essentially once-a-mission events and this is the first one...

Cosmic Superbubble Shows Its Bright Side
2012-08-31 11:01:49

April Flowers for redOrbit.com - Your Universe Online NASA has released a hauntingly beautiful composite image showing a superbubble in the Large Magellanic Cloud (LMC). The LMC is a small satellite galaxy of the Milky Way located about 160,000 light years from Earth. A superbubble is a cavity, filled with 106 Kelvin gas blown into the interstellar medium by multiple supernovae and stellar winds, hundreds of light years across. These cavities are carved out of the surrounding gas by the...

X-ray Signal Detected During Black Hole's Destruction Of Passing Star
2012-08-03 15:48:00

[Watch Video] Lee Rannals for redOrbit.com — Your Universe Online Astronomers have identified an X-ray signal that followed an observation made last year of a quiescent black hole in a distant galaxy. The black hole discovered by the team last year was seen erupting after shredding and consuming a passing star. Astronomers then witnessed days following the observation a distinctive X-ray signal that comes from matter on the verge of falling into the black hole. This...

Latest X-ray astronomy Reference Libraries

2012-03-24 09:55:41

Columbia launched from Kennedy Space Center on December 2, 1990 at 1:49 AM EST and landed at Edwards AFB on December 10 at 9:54 PM PST. The shuttle orbited 144 times at an altitude of 190 nautical miles at an inclination of 28.45 degrees and travelled 3.7 million miles. The mission lasted 8 days, 23 hours, 5 minutes, and 8 seconds. The primary objectives were round-the-clock observations of the celestial sphere in ultraviolet and x-ray astronomy with the ASTRO-1 observatory consisting of...

2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

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...

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,...

2004-10-19 04:45:41

Gamma-Ray Burst -- In astronomy, Gamma-ray bursters (GRBs) are flashes of gamma rays that last from seconds to hours, the longer ones being followed by several days of X-ray afterglow. They occur at random positions in the sky several times each day. They are now believed to result from tremendous explosions in far away galaxies, during the creation of a black hole from a dying star or two colliding neutron stars. The black hole, surrounded by a rotating disk of matter falling into it,...

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Word of the Day
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.