The Eridanus Void. This area shows almost no signs of cosmic matter, meaning no stars, planets, solar systems or clouds of cosmic dust. Researchers couldn't even find dark matter, which is invisible but measurable by matter once present in the region.
Arp 227 consists of two galaxies in the constellation Pisces: the large lenticular galaxy ly across) NGC 474 about 93 mly away; and the spiral galaxy NGC 470 about 95 mly away. They lie at a separation of about ly.