Lit-up gas clouds hint at galaxies’ violent pasts
Blobs known as voorwerpjes suggest intergalactic collisions took place long ago
![Voorwerpje](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/04/cc_voorwerpje_free.jpg?fit=860%2C460&ssl=1)
GREEN GOBLIN Filaments of gas known as voorwerpjes (green) orbit the galaxy UGC 7342 in this image from the Hubble Space Telescope. The galaxy is about 650 million light-years away in the constellation Coma Berenices.
NASA, ESA and W. Keel/University of Alabama, Tuscaloosa