The very darkest part of the moon's shadow during an eclipse.

The lightest part of the moon's shadow during an eclipse.

A type of lunar crater.

The phase of the moon when it is completely full.

A massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.

A small, cold rock floating in space.

A giant ball of ice that reflects sunlight.

A cluster of dust and gas that forms planets.

A time when the sun is at its highest point in the sky.

The time of year when day and night are approximately equal in length, occurring in spring and autumn.

A period of the year characterized by the longest days and shortest nights.

A celestial event marking the start of winter.

A type of star that falls from the sky.

A meteor that survives its passage through the atmosphere and lands on Earth.

A piece of space debris that burns up in the atmosphere.

A comet that has lost its tail.

A large celestial body that orbits a star, is spherical in shape, and has cleared its orbit of other debris.

A small rocky body that orbits a star and is irregularly shaped.

A massive gas cloud that forms stars and planets.

A celestial object that does not orbit any star.

A small particle from space that burns up upon entering Earth's atmosphere, creating a bright streak of light.

A large rock that orbits the sun and can collide with planets.

A type of cloud that produces rain and thunderstorms.

A celestial body that has a solid surface and can support life.

The rise and fall of sea levels caused by the gravitational forces exerted by the moon and the sun.

The daily changes in temperature due to the Earth's rotation.

The movement of ocean currents caused by wind patterns.

The seasonal changes in weather patterns across the globe.

A type of star

The galaxy that contains our solar system, characterized by its spiral shape.

A planet in our solar system

A black hole in the universe

A collection of celestial bodies, including the sun, planets, moons, asteroids, comets, and meteoroids, that are bound by gravity.

A vast empty space with no celestial bodies.

A group of stars that are similar in size and brightness.

A single planet that supports life.

The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon, happening during a full moon.

The reflection of sunlight off the moon's surface during a new moon.

The phenomenon where the moon passes between the Earth and the sun, blocking sunlight from reaching Earth.

The change in the moon's color due to atmospheric conditions on Earth.

A celestial object consisting of a nucleus of ice and dust that forms a tail of gas and dust particles when near the sun.

A large rock that orbits the Earth and causes meteor showers.

A star that has exploded and is no longer visible in the night sky.

A planet that is made entirely of gas and has no solid surface.

A vast system of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

A large collection of planets orbiting a single star.

A cluster of asteroids and comets in space.

A region of space with no matter or energy.

A force that pulls objects toward each other.

A type of energy that can be harnessed.

A phenomenon that only occurs on Earth.

An invisible barrier that prevents objects from moving.

A small rocky body that orbits the sun, primarily found in the asteroid belt between Mars and Jupiter.

A large gaseous planet located beyond Neptune.

A comet that travels close to the sun and develops a tail.

A satellite that orbits Earth.