How has our understanding of the number of planets changed over the past 25 years?

• We have discovered that all planets are similar to Earth.

• We have confirmed that Pluto is the largest planet.

• We have found thousands of planets outside our solar system.

• We have discovered that there are only eight planets in total.

What is the primary method used to discover exoplanets?

• The direct imaging method

• The Doppler method

• The gravitational lensing method

• The transit method

Why do planets need to be close to their star for the transit method to work effectively?

• To ensure they are large enough to be seen

• To allow for frequent transits and a strong signal

• To make them easier to photograph

• To ensure they have atmospheres

What significant contribution has the Kepler telescope made in the field of exoplanet discovery?

• It has disproved the existence of exoplanets.

• It has confirmed the existence of only gas giants.

• It has discovered thousands of exoplanets using the transit method.

• It has found planets only in our solar system.

What is the main goal of the TESS mission?

• To look for exoplanets around the brightest and closest stars

• To discover new galaxies

• To map the surface of Mars

• To find exoplanets around the farthest stars