Using the Hubble Space Telescope, researchers looked at an area of the night sky about the size of the moon—specifically at galaxies contained in the massive supercluster Abell 901/902.

This week's image from the Hubble Space Telescope shows the galaxy M91, ... It is relatively nearby to us, at 55 million light-years away, and it is part of our local supercluster.

The directions toward which the Sun and our galaxy are moving in space change rapidly, with increasing distance of the galaxies used as a reference frame. This effect, which is a manifestation of ...