Definition: A small celestial body that orbits the sun, similar to an asteroid, but often larger than a meteoroid.

Example: Scientists discovered a new planetoid in the outer reaches of the solar system.

Definition: Related to a small celestial body that orbits a star, similar to a planet.

Example: The scientists discovered a planetoidal object in the outer reaches of the solar system.

Definition: Relating to the scientific study of planets, including their formation, structure, and processes.

Example: The planetological research conducted by the team provided new insights into the formation of our solar system.

Definition: A scientist who studies planets, including their composition, atmosphere, and potential for supporting life.

Example: The planetologist presented her findings on the surface of Mars at the conference.

Definition: The study of planets, including their formation, composition, and behavior, particularly within our solar system.

Example: Planetology helps scientists understand the conditions on other planets and their potential for supporting life.

Definition: Relating to or affecting the whole planet.

Example: The new environmental policy aims to address planetwide issues such as climate change.

Definition: A flat map that shows the stars and constellations in the sky, often used in astronomy to help identify celestial objects at a specific time and location.

Example: The astronomer used a planisphere to locate the constellations visible that night.

Definition: Relating to a flat representation of the celestial sphere, often used in maps or charts.

Example: The planispheric projection allows for a detailed view of the stars and constellations.

Definition: A large mass of rock that forms underground when magma cools and solidifies.

Example: The geologists studied the pluton to understand the area's volcanic history.

Definition: Describing motion or rotation that moves forward or in the same direction as the main body, often used in astronomy and physics.

Example: The spacecraft was set to follow a prograde orbit around the planet.