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Spider Crater in Caloris Basin on the planet Mercury. NASA's Messenger probe took the picture of this dramatic impact crater. It looks a bit like a spider waiting in the middle of its web. Mona Evans, "Cosmic Halloween Tour"

Mercury's Subtle Colors: Date: 14 Jan 2008 - Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Hemispheric View of Venus Date: 4 Jun 1998 The hemispheric view of Venus, as revealed by more than a decade of radar investigations culminating in the 1990-1994 Magellan mission, is centered at 180 degrees east longitude. The Magellan spacecraft imaged more than 98 percent of Venus at a resolution of about 100 m; the effective resolution of this image is about 3 km.

Mariner 10's Venus Date: 5 Feb 1974 Made using an ultraviolet filter in its imaging system, the photo has been color-enhanced to bring out Venus's cloudy atmosphere as the human eye would see it. Venus is perpetually blanketed by a thick veil of clouds high in carbon dioxide and its surface temperature approaches 900 degrees Fahrenheit. Launched on 3 Nov. 1973 atop an Atlas-Centaur rocket, Mariner 10 flew by Venus in 1974. Last Update: 7 Apr 2011 (AMB) Credit: NASA

Computer Simulated Global View of Venus Date: 29 Oct 1991 This global view of the surface of Venus is centered at 180 degrees east longitude. Magellan synthetic aperture radar mosaics from the first cycle of Magellan mapping are mapped onto a computer-simulated globe to create this image. Last Update: 11 Jul 2011 (AMB) Credit: NASA/JPL

Morning Star Date: 4 Mar 2013 Dawn on Saturn is greeted across the vastness of interplanetary space by the morning star, Venus, in this image from NASA's Cassini spacecraft. Venus appears just off the edge of the planet, in the upper part of the image, directly above the white streak of Saturn's G ring. Lower down, Saturn's E ring makes an appearance, looking blue thanks to the scattering properties of the dust that comprises the ring. A bright spot near the E ring is a distant star.