Hal Beral / Getty Images
A. Deblauwe
UCA COSTANTIN/CAB/CSIC-INTA
Oxford Scientific
Gary Hershorn/Getty Images
Reuters/Aly Song
X-ray: NASA/CXC/SAO/Ákos Bogdán; Infrared: NASA/ESA/CSA/STScI; Image Processing: NASA/CXC/SAO/L. Frattare & K. Arcand
Richard Drew, File/Associated Press
Gary Hershorn/Getty Images