Fifth planet (hypothetical) into the Sun. Unlike the Disruption Theory's fifth planet, "Planet V" is not credited with creating the asteroid belt. The concept of a fifth planet which had been destroyed to make the asteroid belt, as in the Disruption Theory, has been a popular one in fiction. Fifth planet (hypothetical) In the history of astronomy, a handful of Solar System bodies have been counted as the fifth planet from the Sun. Under the present definition of a planet, Jupiter is counted as the fifth. There are three main ideas regarding hypothetical planets between Mars and Jupiter. During the early 19th century,
The Man from Planet X moor. Meanwhile, the scientist only wants to exploit the spaceman's specialized knowledge for his own selfish ends. A spaceship from a previously unknown planet lands in the Scottish moors, bringing a humanoid alien to Earth near the observatory of Professor Elliot (Raymond Bond), just days before the mysterious Planet X will pass closest to our planet. When the professor and his friend, American reporter John Lawrence (Robert Clarke), discover the spaceman, they help it when it is in distress and try to communicate with it, failing in their attempt. They leave, and the alien follows them. A colleague of the