These four spiral galaxies with bars of stars and gas slicing through them are at various distances from Earth. The galaxy at upper left is 2.1 billion light-years away; the galaxy at upper right, 3.8 billion light-years away; the galaxy at lower left, 5.3 billion light-years away; and the galaxy at lower right, 6.4 billion light-years away. Credit: NASA, ESA, K. Sheth (Spitzer Science Center, California Institute of Technology, Pasadena, Calif.), and P. Capak and N. Scoville (California Institute of Technology)
