Eris: Queen of the Dwarf Planets

The video tutorial explores dwarf planets in the solar system, focusing on their characteristics and differences from regular planets. It highlights Pluto's reclassification and introduces other dwarf planets like Eris, which is more massive than Pluto. The tutorial explains how Eris's size was determined using stellar occultation, a technique that measures the size of distant objects by observing them passing in front of stars. The video concludes with a discussion on the potential for future exploration of these distant celestial bodies.

What is a key difference between dwarf planets and regular planets?

• Dwarf planets are not spherical.

• Dwarf planets orbit the Sun.

• Dwarf planets have no moons.

• Dwarf planets have cleared their orbit of debris.

Which dwarf planet was reclassified from a planet in 2006?

• Haumea

• Eris

• Pluto

• Ceres

How does Eris compare to Pluto in terms of mass?

• Eris is less massive than Pluto.

• Eris is twice as massive as Pluto.

• Eris and Pluto have the same mass.

• Eris is more massive than Pluto.

What is the name of Eris's moon?

• Charon

• Dysnomia

• Titan

• Ganymede

What astronomical technique was used to measure the size of Eris?

• Stellar Occultation

• Spectroscopy

• Radar Imaging

• Parallax