What is an exoplanet?
Explanation: An exoplanet, also known as an extrasolar planet, is a planet that orbits a star outside of our solar system.
What is the habitable zone of a star?
Explanation: The habitable zone of a star is the region around the star where conditions are suitable for liquid water to exist on the surface of an orbiting planet, which is considered a key factor for the potential habitability of a planet.
Which of the following factors is important for determining the habitability of an exoplanet?
Explanation: The habitability of an exoplanet depends on multiple factors, including its distance from the star (in the habitable zone), the composition of its atmosphere (including the presence of gases like oxygen), and the availability of water, among other factors. All of the options listed are important for determining habitability.
What is the primary method used to detect exoplanets?
Explanation: The primary methods used to detect exoplanets are the transit method (observing the decrease in brightness of a star when a planet passes in front of it) and the radial velocity method (detecting the gravitational wobble of a star caused by an orbiting planet). Direct imaging, which involves directly capturing an image of the exoplanet, is also used but is more challenging.
What is a "Goldilocks" planet?
Explanation: A "Goldilocks" planet refers to a planet that is within the habitable zone of its star and has conditions that are neither too hot nor too cold, but just right for the potential existence of liquid water and the potential for life as we know it.