7. Adivar, Venus
This radar image acquired by Magellan shows the Adivar crater in exquisite detail. Bright returns indicate blocky, rough units or smooth surfaces that are tilted toward the radar sensor (toward the west in this case). Dark returns indicate smooth flat surfaces or units that absorb, rather than reflect, radar energy. The blocky central peak, smooth floor, sharp rim, and blocky lobate ejecta apron are typical of many fresh complex craters on Venus. In addition, however, Adivar displays an ornate assemblage of bright distal deposits consisting of diffuse radial streaks. No other venusian crater exhibits such a pronounced distal signature, suggesting that these deposits fade quickly with time and that Adivar may be the youngest complex crater on Venus.
Courtesy of Robert Herrick, Lunar and Planetary Institute.