Space Travel News  
The Seven Sisters Pose For Spitzer

Spitzer's infrared view of the Pleiades. Desktop available 1024x768. Image credit: NASA/JPL-Caltech
by Staff Writers
Pasadena CA (JPL) Apr 13, 2007
The Seven Sisters, also known as the Pleiades, seem to float on a bed of feathers in a new infrared image from NASA's Spitzer Space Telescope. Clouds of dust sweep around the stars, swaddling them in a cushiony veil.

The view is quite different from what you might see if you look out to the west shortly after dusk. Right now, the famous family of stars is "stepping out" in the evening skies with a very bright and dazzling Venus. During the period from around April 10 to 13, the Pleiades shine like a cluster of diamonds just above Venus. On April 19, the crescent moon will join the party, sliding between Venus and the Pleiades for a special viewing.

Paparazzi and fans in both the northern and southern hemispheres should grab a pair of binoculars to get the best look at the star-studded event. The Venus-Pleiades encounter will also be visible with the naked eye where skies are dark and clear.

The Pleiades, located more than 400 light-years away in the Taurus constellation, are the subject of many legends and writings. Greek mythology holds that the flock of stars was transformed into celestial doves by Zeus to save them from a pursuant Orion. The 19th-century poet Alfred Lord Tennyson described them as "glittering like a swarm of fireflies tangled in a silver braid."

The star cluster was born when dinosaurs still roamed the Earth, about 100 million years ago. It is significantly younger than our 5-billion-year-old sun. The brightest members of the cluster, also the highest-mass stars, are known in Greek mythology as two parents, Atlas and Pleione, and their seven daughters, Alcyone, Electra, Maia, Merope, Taygeta, Celaeno and Asterope.

There are thousands of additional lower-mass members, including many stars like our sun. Some scientists believe that our sun grew up in a crowded region like the Pleiades, before migrating to its present, more isolated home.

The new infrared image from Spitzer highlights the "tangled silver braid" mentioned in the poem by Tennyson. This spider-web-like network of filaments, colored yellow, green and red in this view, is made up of dust associated with the cloud through which the cluster is traveling.

The densest portion of the cloud appears in yellow and red, and the more diffuse outskirts are shown in green hues. One of the parent stars, Atlas, can be seen at the bottom, while six of the sisters are visible at top. Additional stars in the cluster are sprinkled throughout the picture in blue.

The Spitzer data also reveal never-before-seen brown dwarfs, or "failed stars," and disks of planetary debris (not pictured). John Stauffer of NASA's Spitzer Space Telescope mission says Spitzer's infrared vision allows astronomers to better study the cooler, lower-mass stars in the region, which are much fainter when viewed in optical light.

Stauffer, who admits to being biased because the Pleiades is his favorite astronomical object, says the cluster is the perfect laboratory for understanding the evolution of stars.

This image is made up of data taken by Spitzer's multiband imaging photometer and its infrared array camera. Light with a wavelength of 4.5 microns is blue; light of 8 microns is green; and light of 24 microns is red.

Related Links
Spitzer at Caltech
Stellar Chemistry, The Universe And All Within It
The Art of Space - Desktops and Eyecandy



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


Finding Beauty In The Universe
Pasadena CA (JPL) Feb 08, 2007
Beth A. Biller is part of an international team of astronomers trying to tease out images of planets around young stars by removing the distortions caused by Earth's atmosphere. Extrasolar planets are extremely faint targets to begin with, and an atmospheric effect known as "speckling" has thwarted most previous attempts to observe them directly.







  • Orbital To Provide Abort Test Booster For NASA Testing
  • Air Force Awards RLV Design Contract To XCOR Aerospace
  • ATK Highlights Progress On Ares I Crew Launch Vehicle
  • Anomalous Behaviour Affects Firing Test Of Vega Zefiro 9 Motor

  • Indian Space Agency Set For First Commercial Launch Of Foreign Satellite
  • Russia To Launch Four US Satellites In May
  • PSLV-C8 To Be Launched On April 23
  • ILS Proton Successfully Launches Anik F3 Satellite

  • NASA to launch Shuttle Atlantis as early as June
  • Shuttle Assessments And Repair Work Ongoing
  • NASA Assigns Crew For Shuttle Mission To Install Japanese Lab
  • Shuttle Atlantis Grounded by Fuel Tank Damage

  • NASA Extends Contract With Russian Federal Space Agency
  • The Race From Space
  • Expedition 15 Crew To Launch From Baikonur
  • Crew Moves Soyuz To Prep For New Arrivals

  • Bill Gates Eyes Flight To Space
  • Latest Space Tourist Docks At Space Station For Week Long Holiday
  • The Facts On US Commercial Human Space Flight
  • Fifth Space Tourist Soars Toward Space Station Holiday In Space

  • China Launches Ocean Monitoring Satellite
  • China To Pursue Space Instead Of Socialism
  • China Outlines Space Program Till 2010
  • China To Launch New Direct Broadcast Satellite To Replace SinoSat-2

  • Top Robotics Teams To Rack And Roll Atlanta Georgia Dome
  • Assistive Robot Adapts To People And New Places
  • Flexible Electronics Could Find Applications As Sensors And Artificial Muscles
  • Machine Shop Keeps Robots Rolling

  • Mars Project To Simulate Radiation Exposure
  • Experiment Simulates Radiation Exposure
  • Characterizing Wind Streaks At Victoria Crater
  • Spirit Begins To Look For Best Access To Home Plate

  • The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement