The National Mall in Washington, District of Columbia — The American Northeast (Mid-Atlantic)
Top section of the marker:
This tiny sphere is the planet Venus at one 10-billionth actual size.
If Venus were this big, how far away would the Sun and other planets be? Look at the map on the lower panel to find your position in the solar system.
Bottom section of the marker:
Voyage to Venus
Venus' highest mountain, Maxwell Montes, rises taller than Earth's Mount Everest. Overhead, clouds of sulfuric acid blanket the sky, carried by steady winds of 220 mph (360 km/hr). It is a world with acid rain, lightning, and possibly active volcanoes. Earth has one volcano more than 60 miles (100 km) across--Venus has over 100.
The world once called Earth's twin is far different from the tropical paradise we imagined. Spacecraft have landed on Venus, but none has ever survived more than 2 hours--cooked by the extreme temperature. The crushing weight of the atmosphere feels like the pressure half a mile (1 km) beneath Earth's oceans.
The Hottest World
Venus' thick atmosphere of mostly carbon dioxide traps the Sun's energy. This "greenhouse effect" raised the planet's surface temperature to 800°F (470°C)--even hotter than Mercury, the planet closest to the Sun. Several billion years ago Venus may have had oceans. They have long since evaporated.
Walk to Earth about 6 steps
Viewed from Venus, Earth's moon does not go through phases; it is always full.
Walk to Mercury about 8 steps
Voyage is an exhibition of the National Center for Earth and Space Science and the Smithsonian Institution. It is designed for permanent installation in communities worldwide.
Erected 2013 by Smithsonian Institution.
Location. 38° 53.322′ N, 77° 1.119′ W. Marker is in The National Mall, District of Columbia, in Washington. Marker is on Jefferson Drive Southwest, on the right when traveling east. Touch for map. On the grounds of the National Air and Space Museum. Marker is in this post office area: Washington DC 20565, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Mercury (here, next to this marker); Sun (here, next to this marker); Earth (here, next to this marker); Mars (a few steps from this marker); Voyage (a few steps from this marker); Asteroids and Comets (within shouting distance of this marker); Jupiter (within shouting distance of this marker); Star Nurseries (about 300 feet away, measured in a direct line). Touch for a list and map of all markers in The National Mall.
Categories. • Air & Space •
Credits. This page was last revised on December 5, 2017. This page originally submitted on November 24, 2017, by Devry Jones of Washington, District of Columbia. This page has been viewed 52 times since then and 12 times this year. Photos: 1, 2, 3, 4. submitted on November 24, 2017, by Devry Jones of Washington, District of Columbia. • Bill Pfingsten was the editor who published this page.