A region of spacetime where gravity is so strong that nothing, not even light, can escape from it.

An astronomical object that is composed mostly of ice, dust, and rocky material, and has a tail that always points away from the Sun.

A large, gravitationally bound system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter.

The phenomenon in which the gravitational pull of the Moon and the Sun causes periodic rises and falls in sea levels.

The apparent change in the wavelength of light from an object due to its movement away from the observer, commonly observed in distant galaxies.

A brief streak of light in the sky produced when a meteoroid enters the Earth's atmosphere and burns up due to friction with the air.

A large cloud of gas and dust in space, often the birthplace of stars, where matter can collapse under its own gravity.

The point on the Earth's surface that lies directly above the point where a meteorite strikes the ground.

The cyclical movement of the Earth on its axis, which takes approximately 24 hours to complete and results in day and night.

A celestial body moving in an orbit around a star, typically smaller than a planet and composed of rock and metal.

A celestial event where one astronomical object moves into the shadow of another object, resulting in a temporary obscuring of light.

The movement of the Earth around the Sun in an elliptical orbit, taking about 365.25 days to complete one full cycle.

A measurement of distance that light travels in one year, often used in astronomy to describe vast distances in the universe.

A phenomenon where the Moon passes between the Earth and the Sun, causing the Sun to be obscured for a brief period.

The resistance of an object to changes in its state of motion, particularly its velocity, often associated with mass.

The faint afterglow of the Big Bang, observed as a uniform background radiation permeating the universe.

A small rock or particle from space that has entered the Earth's atmosphere but has not yet reached the ground.

A large group of stars forming a recognizable pattern in the night sky, often named after mythological characters or animals.

The gravitational force exerted by the Moon and the Sun that causes the periodic rise and fall of sea levels on Earth.

A natural satellite that orbits around a planet, reflecting light from its star, typically the Earth’s permanent companion.

A small, solid, naturally occurring object in space that is typically composed of rock and metal, and can vary in size from a few meters to hundreds of kilometers.

A body of gas and dust in space, which may eventually contract to form stars; it is often vibrant and colorful due to the presence of different elements.

The phenomenon where an object travels at a high velocity and produces a faint glow by heating as it passes through the Earth’s atmosphere, becoming visible as a streak of light.

A celestial body that has a nucleus made of ice and dust and develops a glowing coma and tail when it approaches the Sun.