Since 2014, the Kepler telescope has observed superior planets like Neptune, capturing images of its moons Triton and Nereid. The apparent retrograde motion of Neptune is due to Kepler's faster orbit. Originally designed to find exoplanets using the transit method, Kepler measures dips in starlight to detect planets. During Neptune observations, it focused on changes in reflected sunlight, revealing Neptune's dynamics and laying groundwork for future exoplanet studies.

What is the apparent motion of Neptune as observed by the Kepler telescope?

• It moves rapidly eastward.

• It appears to move backward.

• It remains stationary.

• It moves steadily westward.

What was the original purpose of the Kepler telescope?

• To measure the brightness of stars.

• To search for planets in other solar systems.

• To study the sun's seismic waves.

• To observe the moons of Neptune.

How does the transit method help in discovering exoplanets?

• By analyzing the planet's atmosphere.

• By observing the planet's gravitational pull.

• By detecting a dip in starlight as a planet passes in front of its star.

• By measuring the planet's temperature.

What factors cause fluctuations in Neptune's brightness as observed by Kepler?

• The presence of rings around Neptune.

• The distance from the sun.

• The planet's daily rotation and cloud movements.

• The gravitational pull of its moons.

What did Kepler's observations of Neptune contribute to future studies?

• They provided insights into Neptune's hidden dynamics.

• They confirmed the existence of new moons.

• They revealed Neptune's atmospheric composition.

• They discovered new exoplanets.