Galaxy Cluster Abell 1689

Release Date: March 10, 2010 - Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at NASA's Goddard Space Flight Center in Greenbelt, Md., tracks this collective motion -- dubbed the "dark flow" -- to twice the distance originally reported, out to more than 2.5 billion light-years.

Abell 1689, redshift 0.181.

Credit: NASA/Goddard Space Flight Center/Scientific Visualization Studio/ESA/L. Bradley/JHU

To learn more go to:

www.nasa.gov/centers/goddard/news/releases/2010/10-023.html

To see other visualizations related to this story go to:

svs.gsfc.nasa.gov/goto?10580