Galaxy
The Moon, Sun and planets all appear in a strip of sky called the ecliptic. It is a plane defined by the plane of the Earth's orbit and the Sun is always on the ecliptic, while the Moon and planets stay close to it.
planets stay in the sky due to the pull of gravity
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You can find planets on the celestial sphere along the ecliptic, which is the apparent path that the Sun takes across the sky throughout the year. The planets in our solar system generally follow this same path, although they may deviate slightly due to their individual orbits.
In our solar system, the three planets that are generally visible to the naked eye in the night sky are Venus, Mars, and Jupiter. These planets can often be seen without the aid of a telescope or binoculars.
Look up into the sky. Stars, planets, comets, asteroids, galaxies, etc., are celestial bodies.
The planets shine because they reflect sunlight.
The term "planet" comes from the Greek word for "wanderer." This name was given to certain celestial bodies due to their apparent motion across the sky, in contrast to the fixed stars.
Because stars not like planets revolve and stars last at the night sky for many many years even at your lifetime.
The planets most certainly ARE visible in the northern hemisphere.
The new planets were discovered by astronomers using telescopes to search for distant objects in the night sky. Observations were made to confirm the presence of these planets by analyzing their gravitational effect on nearby stars.
Romans adopted the name Mercury (Mercurius) as the equivalent of Hermes, a messenger god. The name may be a reference to its orbital motion, which is the most rapid of the planets, or to its travels between sunset sky and sunrise sky.