Located 500 million light-years away in the constellation Sculptor, the galaxy looks like a wagon wheel. The galaxy's nucleus is the bright object in the center of the image; the spoke-like structures are wisps of material connecting the nucleus to the outer ring of young stars. The galaxy's unusual configuration was created by a nearly head-on collision with a smaller galaxy about 200 million years ago.
The Sun as you've never seen it: Nasa reveals stunning footage from new satellite
Ring of fire: Known as a 'prominence eruption', this is a loop of gas heated to an extremely high temperature. Twisted magnetic fields on the Sun's surface cause the gas to be shaped like this. This image was captured by the satellite on March 30