Exoplanets
What is an exoplanet?
An exoplanet is a planet outside our solar system that orbits another star.
Why do living things need water?
Living things need water to survive because it helps carry nutrients, remove waste, and support life processes.
What is astronomy?
Astronomy is the study of space, stars, planets, and everything beyond Earth’s atmosphere.
What planet do humans live on?
Humans live on Earth.
What was the Kepler mission made to do?
The Kepler Space Telescope was made to find exoplanets by watching stars and detecting tiny dips in their brightness when planets pass in front of them.
Where are exoplanets found?
Exoplanets are found outside our solar system, orbiting stars in the Milky Way Galaxy and beyond.
What is the difference between a star and a planet?
A star is a hot, glowing ball of gas that produces its own light and heat through nuclear fusion, while a planet is a cooler object that orbits a star and does not produce its own light.
What makes Earth special for life?
Earth is special because it has liquid water, a breathable atmosphere, the right temperature range, and protection from harmful space radiation.
Which organization launched the Kepler telescope?
The Kepler Space Telescope was launched by NASA.
Where are exoplanets found?
Exoplanets are found outside our solar system, orbiting other stars.
Is Kepler-452b in the habitable zone?
Yes, Kepler-452b is in the habitable zone of its star.
What tools do scientists use to study space?
Scientists use tools like telescopes (for example the Hubble Space Telescope and James Webb Space Telescope), space probes, satellites, and computer models to study space.
How is Kepler-452b similar to Earth?
Kepler-452b is similar to Earth because it is about the same size and orbits in its star’s habitable zone, where temperatures could allow liquid water.
How did the Kepler telescope find planets?
The Kepler Space Telescope found planets by using the transit method—detecting tiny, regular dips in a star’s brightness when a planet moves in front of it.
Why is Kepler-452b similar to Earth?
Kepler-452b is similar to Earth because it is rocky, Earth-sized, and orbits in the habitable zone of its star.
What conditions help a planet support life?
Conditions that help a planet support life include liquid water, suitable temperatures, air, and energy from a star.
How do telescopes help scientists learn about planets?
Telescopes help scientists study planets by collecting light from them or their stars, which lets scientists measure things like a planet’s size, temperature, orbit, and atmosphere.
What are some differences between Earth and Kepler-452b?
Kepler-452b is likely much older than Earth, orbits a Sun-like but slightly older star, and probably has a stronger gravity and a thicker atmosphere, though scientists are not completely sure yet.
What challenges do scientists face in space exploration?
Scientists face challenges like extreme distances, harsh conditions in space, limited fuel and power, and the difficulty of collecting clear data from very far away.
Why do scientists want to learn more about exoplanets?
Scientists want to learn more about exoplanets to understand how planets form and whether life exists outside Earth.
Why do scientists search for habitable planets?
Scientists search for habitable planets to find worlds that could support life and to better understand how common life might be in the universe.
What did the NASA Kepler mission help scientists discover?
The Kepler Space Telescope helped scientists discover thousands of exoplanets and showed that planets are common in the Milky Way Galaxy, including many that are similar in size to Earth.
Why do scientists compare other planets to Earth?
Scientists compare other planets to Earth because it is the only known planet with life. This helps them judge if other planets might also be habitable and understand how planets form and change.
How could future missions help us learn more about space?
Future missions can help us by telling us more about the outer space