The materials that compose most of Titan are completely different than those that compose Earth. Therefore, what were scientist surprised to see from space-probe images in a 2005 landing?
A) some indications that an ancient civilization may have inhabited Titan approximately 500,000 years ago
B) a landscape similar to Earth's
C) an utterly alien landscape, unlike anything seen on Earth
D) the image of a man's face on an equatorial mountain range
Question 2
Saturn's rings are composed of?
A) chunks of ice and rock
B) methane gas
C) hydrogen
D) old satellites and other space junk lost from Earth's orbit and other space missions
Solar EM Radiation Penetration into Earth's Atmosphere
The Distribution of the Earth's Wealth
Effects of Earth’s Changing Orientation: Solar Angle
Earth Atmosphere
Earth as a System: The Hydrologic Cycle
Earth 150 Million Years Ago