Source: ESA Hubble
Hubble image of galaxy cluster MACS J1206.
Image credits:NASA, ESA, M. Postman (STScI) and the CLASH Team
The NASA/ESA Hubble Space Telescope has been used to make an image of galaxy cluster MACS J1206.2-0847. The apparently distorted shapes of distant galaxies in the background is caused by an invisible substance called dark matter, whose gravity bends and distorts their light rays. MACS 1206 has been observed as part of a new survey of galaxy clusters using Hubble.(read more)