Will Pluto and Neptune ever collide?

When will Pluto and Neptune collide?

• From an excerpt from http://www.knowledgebase-script.com/demo%E2%80%A6 "Pluto revolves farther from the sun than any of the planets for most of its orbit. However, because of its orbital eccentricity, Pluto moves closer to the sun for approx 20 years, leaving Neptune at a farther distance. From Jan 23, 1979 Pluto moved closer to the sun and remained in that position till Mar 15, 1999. After 1999 it is now Pluto's turn to go further and Neptune will remain closer to the sun for approx 228 years." Certainly not in the near future, the two planets could collide,, no need to go in details about what can happen to the rest of the planets in our solar system. With the technology that we have available,, I don't have it but I know that it exists. The approx date of such a collision can be calculated.. or not?

• Answer:

  I don't know the answer, but it can be calculated using the same basic concepts that allow scientists to predict when an asteroid might collide with the Earth. It basically involves projecting the two orbits until both bodies are in the same place at the same time.