Hubble Telescope Image of the Week – Galactic Maturity

Amazing Image of NGC 7773

Credit: ESA/Hubble & NASA, J. Walsh

This striking image was taken by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3, a powerful instrument installed on the telescope in 2009. WFC3 is responsible for many of Hubble’s most breathtaking and iconic photographs, including Pictures of the Week.

Shown here, NGC 7773 is a beautiful example of a barred spiral galaxy. A luminous bar-shaped structure cuts prominently through the galaxy’s bright core, extending to the inner boundary of NGC 7773’s sweeping, pinwheel-like spiral arms. Astronomers think that these bar structures emerge later in the lifetime of a galaxy, as star-forming material makes its way towards the galactic center — younger spirals do not feature barred structures as often as older spirals do, suggesting that bars are a sign of galactic maturity. They are also thought to act as stellar nurseries, as they gleam brightly with copious numbers of youthful stars.

Our galaxy, the Milky Way, is thought to be a barred spiral like NGC 7773. By studying galactic specimens such as NGC 7773 throughout the Universe, researchers hope to learn more about the processes that have shaped — and continue to shape — our cosmic home.

2 Comments on "Hubble Telescope Image of the Week – Galactic Maturity"

  1. Johannes Huijgen | June 4, 2019 at 1:33 am | Reply

    How to come to those distance galaxies and is there a planet to find like earth ,if yes how long to come there in years ,is it posible to fly faster the light speed ,please send me a answer on these guestions?

  2. Based on what we know today it is not possible to move faster than the speed of light, but …. There are billions of galaxies and billions of stars within each galaxy. It is inconcievable to me we are the only planet with intelligent life. How long to get there?
    If you know the distance divide by whatever speed (MPH) you want and that is the number of hours to get there. It will be a big number.

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