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,
Extraterrestrial places in the Cthulhu Mythos spread, fertilizing the dead planet. Ktynga (or "Norby's comet") is the name of a bluish comet that is currently near the star Arcturus. The comet is unusually hot and has strange properties, such as the ability to travel faster than light. On the surface of the comet is a huge building, wherein dwells the being Fthaggua, and his servants, the fire vampires. Fthaggua and his minions can guide the comet to travel between the stars, and will visit our Solar System four-centuries from now. A dark-litten and mist-shrouded planet whence N'rath-Gol comes, a minion of Nyarlathotep. A mysterious celestial body