 The gas in the Antlia Dwarf galaxy has the same radial velocity as a warp in the disk of NGC 3109, indicating that the two galaxies had a close encounter approximately one billion years ago.Sextans A is 5,000 light-years in diameter, and square-shaped, and contains numerous star clusters, located at the distance of about 4.31 million light-years away.Sextans A has a peculiar square shape.