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Ignore the dashed lines on the image; they're imaging process artifacts.

Venus - one place I can't see manned exploration EVER occurring.

Mass (kg)............................................4.87 x 10^24
Diameter (km)........................................12104
Mean density (kg/m^3) ...............................5250
Escape velocity (m/sec)..............................10400

Average distance from Sun (AU).......................0.723
Rotation period (length of day in Earth days)........243.0 (retrograde)
Revolution period (length of year in Earth days).....224.7

Obliquity (tilt of axis degrees).....................178
Orbit inclination (degrees)..........................3.39
Orbit eccentricity (deviation from circular).........0.007

Mean surface temperature (K).........................726
Surface pressure.................................90 bars (Earth sea level = 1 bar)

Visual geometric albedo (reflectivity)...............0.59
Highest point on surface.............................Maxwell Montes (17 km above mean planetary radius)
Atmospheric components...............................96% carbon dioxide, 3% nitrogen, 0.003% water vapor
Surface materials....................................basaltic rock and altered materials

Compare that to Earth:

Mass (kg)............................................5.98 x 10^24
Diameter (km)........................................12756
Mean density (kg/m^3) ...............................5520
Escape velocity (m/sec)..............................11200

Average distance from Sun (AU).......................1
Rotation period (length of day in Earth hours).......23.93
Revolution period (length of year in Earth days).....365.26

Obliquity (tilt of axis in degrees)..................23.4
Orbit inclination (degrees)..........................0
Orbit eccentricity (deviation from circular).........0.017

Mean surface temperature (K).........................281
Maximum surface temperature (K)......................310
Minimum surface temperature (K)......................260

Visual geometric albedo (reflectivity)...............0.39
Highest point on surface.............................Mount Everest (over 8 km above sea-level)
Atmospheric components...............................78% nitrogen, 21% oxygen, 1% argon
Surface materials....................................basaltic and granitic rock and altered materials

The series of dark rectangles that crosses the image from top to bottom were created by the imaging procedure and are not real.

And here I was, thinking that the rectangles were zipper marks that resulted when they joined two photos together. ;-)

Seriously, though, the image is intriguing and it's always fun to see something from that website. Thanks for sharing.

Ignore the dashed lines on the image; they're imaging process artifacts.

Yeah, sure. I can tell a Firestone FX-150-30 tire track when I see one. (j/k) :-)

What a fabulous site! I've forwarded it to several teachers who can use it. Thanks for the post.