Night sky or good binoculars, the planets appear as discs demonstrating finite size, and it is possible to observe orbiting moons which cast shadows onto the host planet's surface. Venus is the most prominent planet, often called the "morning star" or "evening star" because it is brighter than the stars and often the only "star" visible near sunrise or sunset, depending on its location in its orbit. Mercury, Mars, Jupiter and Saturn are also visible to the naked eye. Earth's Moon is a grey disc in the sky with cratering visible to the naked eye. It spans, depending on its exact location,
Star Trek: Planet of the Titans series Kaufmann went on to direct films such as "Invasion of the Body Snatchers" (1978) and "The Right Stuff" (1983). Although the film was never made, it was later discussed by critics and writers. David Hughes included it in his book "The Greatest Science Fiction Movies Never Made" (2008) in the chapter about the planned "Star Trek" films of the 1970s. Star Trek: Planet of the Titans Star Trek: Planet of the Titans, also known as Star Trek: Planet of Titans, is an unproduced film based on "Star Trek", which reached the script and design phases of pre-production. Following the