Transit photometry involves observing the dimming of a star's light as an exoplanet passes in front of it, causing a slight decrease in brightness.

The habitable zone is defined as the range of distances from a star where the temperature is suitable for liquid water to exist on the surface of a planet.

The Kepler Space Telescope was specifically designed to search for Earth-like planets in the habitable zones of stars.

Hot Jupiters are gas giant planets that orbit very close to their stars, while cold Jupiters are gas giant planets that orbit farther away from their stars.

The transit method involves measuring the amount of starlight that is blocked by the exoplanet as it passes in front of the star, which allows astronomers to calculate the exoplanet's radius.

The radial velocity method involves measuring the Doppler shift of the star's light as the exoplanet orbits it, which allows astronomers to calculate the exoplanet's mass.

The discovery of exoplanets has provided evidence for the existence of life beyond Earth, helped us understand the formation and evolution of planetary systems, and given us insights into the diversity of planets in the universe.

The term 'exoplanet' is used to describe a planet that orbits a star other than the Sun.

The term 'habitable planet' is used to describe a planet that is located in the habitable zone of a star, where conditions are suitable for liquid water to exist on the surface.

The term 'gas giant' is used to describe a planet that is composed primarily of gas, such as hydrogen and helium.

The term 'terrestrial planet' is used to describe a planet that is composed primarily of rock and metal, such as Earth.

The term 'dwarf planet' is used to describe a planet that is smaller than Earth but larger than an asteroid.

The term 'rogue planet' is used to describe a planet that is not orbiting a star.

The term 'synchronous planet' is used to describe a planet that is tidally locked to its star, meaning that one side of the planet always faces the star and the other side is always dark.

The term 'eccentric planet' is used to describe a planet that has a highly elliptical orbit, meaning that its distance from the star varies significantly over the course of its orbit.