Definition: Relating to the study of the universe and its structure, origins, and development.

Example: The cosmological theories explain how the universe began and evolved over time.

Definition: In a way that relates to the universe or the study of the universe's origin and structure.

Example: The scientists discussed the implications of the findings cosmologically, considering how they affect our understanding of the universe.

Definition: A person who studies the universe, its origins, structure, and the laws that govern it.

Example: The cosmologist presented her findings on the formation of galaxies at the conference.

Definition: The study of the universe, including its origins, structure, and the laws that govern it.

Example: Many scientists dedicate their careers to cosmology, exploring the mysteries of the universe.

Definition: A person trained to travel and work in space, specifically in the Russian or Soviet space program.

Example: The cosmonaut floated gracefully in the weightlessness of space.

Definition: The universe seen as a well-organized and harmonious system, including all matter, energy, and space.

Example: Astronomers study the cosmos to understand the origins and structure of the universe.

Definition: A small hole or depression in a surface, often formed by an impact or explosion.

Example: The moon's surface is covered with many craterlets, each telling a story of past impacts.

Definition: The part of a planet that is illuminated by the sun, where it is daytime.

Example: The dayside of the Earth experiences sunlight while the nightside is dark.

Definition: The process of a spacecraft moving out of its orbit, usually to return to Earth or to a lower orbit.

Example: The deorbit of the satellite was carefully planned to ensure a safe landing.

Definition: To move or cause something to move from its orbit around a planet or celestial body, typically to return it to Earth.

Example: The mission was designed to deorbit the satellite safely after its useful life.

Definition: A faint light that is reflected from the Earth onto the Moon, making the dark part of the Moon visible.

Example: During the lunar eclipse, the Moon was illuminated by earthlight, allowing us to see its shadowed surface.