Avez-vous déjà vu... la surface de la planète Vénus, observée au radar depuis la Terre ?
Maintenant, oui.
Southern hemisphere of Venus from the Arecibo Planetary Radar on March 21 2017
Image is centered at 330° E. Prominent quasicircular feature with massive lava flows at the bottom of the image is Quetzalpetlatl Corona
Credit: NRAO/AUI/NSF/Arecibo/Smithsonian/B. Campbell/D. Machacek