>
Invisible Giants Exposed
     April 14, 2004
     >> About this Image
 
 
Good Look at the Hills

  April 13, 2004
 
October 2008
  > Click to View Image Archive
September 2008
  > Click to View Image Archive
August 2008
  > Click to View Image Archive
July 2008
  > Click to View Image Archive
June 2008
  > Click to View Image Archive
May 2008
  > Click to View Image Archive
April 2008
  > Click to View Image Archive
March 2008
  > Click to View Image Archive
February 2008
  > Click to View Image Archive
January 2008
  > Click to View Image Archive
December 2007
  > Click to View Image Archive
November 2007
  > Click to View Image Archive
October 2007
  > Click to View Image Archive
September 2007
  > Click to View Image Archive
August 2007
  > Click to View Image Archive
July 2007
  > Click to View Image Archive
June 2007
  > Click to View Image Archive
May 2007
  > Click to View Image Archive
April 2007
  > Click to View Image Archive
March 2007
  > Click to View Image Archive
February 2007
  > Click to View Image Archive
January 2007
  > Click to View Image Archive
December 2006
  > Click to View Image Archive
November 2006
  > Click to View Image Archive
October 2006
  > Click to View Image Archive
September 2006
  > Click to View Image Archive
August 2006
  > Click to View Image Archive
July 2006
  > Click to View Image Archive
June 2006
  > Click to View Image Archive
May 2006
  > Click to View Image Archive
April 2006
  > Click to View Image Archive
March 2006
  > Click to View Image Archive
February 2006
  > Click to View Image Archive
January 2006
  > Click to View Image Archive
December 2005
  > Click to View Image Archive
November 2005
  > Click to View Image Archive
October 2005
  > Click to View Image Archive
September 2005
  > Click to View Image Archive
August 2005
  > Click to View Image Archive
July 2005
  > Click to View Image Archive
June 2005
  > Click to View Image Archive
May 2005
  > Click to View Image Archive
April 2005
  > Click to View Image Archive
March 2005
  > Click to View Image Archive
February 2005
  > Click to View Image Archive
January 2005
  > Click to View Image Archive
December 2004
  > Click to View Image Archive
November 2004
  > Click to View Image Archive
October 2004
  > Click to View Image Archive
September 2004
  > Click to View Image Archive
August 2004
  > Click to View Image Archive
July 2004
  > Click to View Image Archive
June 2004
  > Click to View Image Archive
May 2004
  > Click to View Image Archive
April 2004
  > Click to View Image Archive
March 2004
  > Click to View Image Archive
February 2004
  > Click to View Image Archive
January 2004
  > Click to View Image Archive
December 2003
  > Click to View Image Archive
November 2003
  > Click to View Image Archive
October 2003
  > Click to View Image Archive
September 2003
  > Click to View Image Archive
August 2003
  > Click to View Image Archive
July 2003
  > Click to View Image Archive
June 2003
  > Click to View Image Archive
May 2003
  > Click to View Image Archive
April 2003
  > Click to View Image Archive
 
Invisible Giants Exposed 

Invisible Giants Exposed

A new image from NASA's Spitzer Space Telescope peers through a dusty veil to reveal what astronomers are calling one of the most violent pockets of star birth ever found in our Milky Way Galaxy. The newborn stars are huge and bright -- up to 100,000 times as bright as the Sun, and the scene is violent.

"We've never seen anything like this before," said William Reach of the California Institute of Technology, which runs the telescope's science operations. "The massive stars are ripping the cloud of gas and dust around them to shreds."

The activity is about 10,000 light-years away in the constellation Cygnus. Among the star-forming regions is a prominent one named DR21, located near the top-center of the image.

This pocket of star birth is shrouded in so much dust that visible light does not penetrate. Previous radio and near-infrared observations showed a powerful jet of material emanating from the cloud. Spitzer detects infrared light, which can pass through dust. Inside DR21, a dense knot of huge stars is revealed.

Red regions correspond to organic compounds called polycyclic aromatic hydrocarbons. From DR21, a green jet of gas shoots downward and to the left, past the bulge of stars. It represents hot gas ejected from the region's biggest star, the astronomers said. The jet contains carbon monoxide and molecular hydrogen.

More pockets of star formation are visible below DR21. A large swirling cloud to the lower left is thought to be a similar stellar nursery. And the giant bubble to the left is likely the remnant of past activity.

Spitzer was launched last August. The new image, released Tuesday, was made as part of a project led by Anthony Marston at the European Space Research and Technology Center in The Netherlands.

-- Robert Roy Britt

Credit: NASA/JPL-Caltech/A. Marston (ESTEC/ESA) & A. Noriega-Crespo (SSC/Caltech)



Return each weekday for a new SPACE.com Image of the Day.
 

     about us | FREE Email Newsletter | message boards | register at SPACE.com | contact us | advertise with us | terms & conditions | privacy policy      DMCA/Copyright

     © Imaginova Corp. All rights reserved.