Images from space don’t get any prettier than this. A new image from the Hubble Space Telescope was released today to commemorate a quarter century of exploring the Solar System and beyond since the launch of the telescope on April 24, 1990. It shows a giant cluster of about 3,000 stars called Westerlund 2, located 20,000 light-years away from Earth in the constellation Carina. NASA describes the new image as a “brilliant tapestry of young stars flaring to life resemble a glittering fireworks display.”
The Hubble Teams are giving away a few “gifts” to everyone to celebrate this silver anniversary — see below!
“Hubble has completely transformed our view of the universe, revealing the true beauty and richness of the cosmos” said John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate. “This vista of starry fireworks and glowing gas is a fitting image for our celebration of 25 years of amazing Hubble science.”
The cluster is named after Swedish astronomer Bengt Westerlund who discovered the grouping in the 1960s.
This picture is too gorgeous not to share it. A new Chandra X-ray telescope image shows a beautiful, dense region of massive stars in the Centaurus constellation. It almost appears as though someone threw a handful of colored candies out into space. Known as Westerlund 2, this star cluster has been a mysterious region of our galaxy, filled with dust and gas that have obscured our vision of what lies inside. But new X-ray observations with Chandra have revealed some of the hottest, brightest and most massive known stars, and this is now regarded as one of the most interesting star clusters in the Milky Way galaxy.
About 20,000 light years from Earth, Westerlund 2 is a young star cluster with an estimated age of about one or two million years. An extremely massive double star system called WR20a is visible in the image, the bright yellow point just below and to the right of the cluster’s center. This system contains stars with whopping masses of 82 and 83 times that of the Sun. The dense streams of matter steadily ejected by these two massive stars, called stellar winds, collide with each other and produce large amounts of X-ray emissions. But alas, no chocolate candies.
This collision is seen at different angles as the stars orbit around each other every 3.7 days.
Several other bright X-ray sources may also show evidence for collisions between winds in massive binary systems.
The Chandra image of Westerlund 2 shows low energy X-rays in red, intermediate energy X-rays in green and high energy X-rays in blue. This is an area that is incredibly dense with massive stars, and bright with X-rays.
Image is 8.4 arc minutes across and was taken by the Chandra Advanced CCD Imaging Spectrometer, which can study temperature variations from x-ray sources.