Our Galaxy Could Be Full of Exoplanets with Oceans | SciShow News

The video explores the concept of ocean worlds beyond Earth, highlighting a NASA model predicting that such worlds are common in the galaxy. It discusses the methods used to identify potential oceans on exoplanets, including calculations of density and effective temperature. The James Webb Space Telescope's role in detecting water in space is also covered. Additionally, the video delves into Pluto's history, suggesting it may have had an ocean since its formation, challenging previous assumptions about its cold origins. This research implies that ocean worlds could be more prevalent in our solar system than previously thought.

What does the NASA model suggest about the rarity of ocean worlds in the galaxy?

• Ocean worlds are extremely rare.

• Ocean worlds are common.

• Ocean worlds only exist in our solar system.

• Ocean worlds are only found on gas giants.

What is a necessary condition for a planet to potentially have an ocean?

• It must be closer to its star than Earth.

• It must be larger than Earth.

• It must be a gas giant.

• It must be solid.

How do researchers estimate the effective temperature of a planet?

• By observing the planet's magnetic field.

• By calculating the planet's distance from its star and the star's brightness.

• By analyzing the planet's surface composition.

• By measuring the planet's atmosphere.

What evidence suggests that Pluto may have started off hot?

• Presence of large ice caps.

• Features like ridges and faults on its surface.

• Its lack of an atmosphere.

• Its proximity to the Sun.

What implication does the discovery of an ocean on Pluto have for other Kuiper Belt objects?

• They are all smaller than Pluto.

• They are all likely to be gas giants.

• They may also have underground oceans.

• They are unlikely to have any water.