1. Explain why Triton will never collide with Neptune, even though Triton is spiraling toward that planet. 2. Consult the Internet or such magazines as Sky & Telescope or Astronomy to determine what...

1. Explain why Triton will never collide with Neptune, even though Triton is spiraling toward that planet.

2. Consult the Internet or such magazines as Sky & Telescope or Astronomy to determine what space missions are now under way. What data and pictures have they sent back that update information presented in this chapter?