Question

What is the basis of classifying the planets inthe solar system as terrestrial and jovian?
State nebular hypothesis. Explain briefly (in not more that 150 words) the formation of
solar system as per the nebular model.

Answer 1

Answer on Question #54984, Physics / Astronomy | Astrophysics

With the exception of Pluto, planets in our solar system are classified as either terrestrial (Earth-like) or Jovian (Jupiter-like) planets. Terrestrial planets include Mercury, Venus, Earth, and Mars. These planets are relatively small in size and in mass. A terrestrial planet has a solid rocky surface, with metals deep in its interior. In the solar system, these planets are closer to the sun and are therefore warmer than the planets located farther out in the solar system. Future space missions are being designed to search remotely for terrestrial planets around other stars.

Jovian planets include Jupiter, Saturn, Uranus, and Neptune. These planets have larger sizes and masses. Jovian planets do not have solid surfaces. They are sometimes called gas giants because they are large and made mostly of gases. Small amounts of rocky materials are only found deep in the cores of Jovian planets. In the solar system, Jovian planets are located farther from the sun than terrestrial planets, and are therefore cooler. Scientists have found more than 100 Jovian planets around other stars. The majority of the extra solar Jovian planets that have been discovered so far are closer to their stars than the Jovian planets in the solar system are to the sun.

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