CLEAN : Water discovered for first time in atmosphere of habitable exoplanet

The video discusses the search for habitable exoplanets, focusing on the discovery of Kepler 218B, a rocky planet with potential habitable conditions. It highlights the significance of finding water vapor in its atmosphere and the search for biomarkers. Kepler 218B is described as a super Earth, larger and heavier than Earth, with varying water content. The video emphasizes the importance of future research to detect life signatures.

What is the significance of observing a planet's atmosphere when it passes in front of a star?

• It helps determine the planet's size.

• It reveals the planet's distance from the star.

• It shows the planet's rotation speed.

• It allows scientists to detect atmospheric molecules.

Why is the discovery of Kepler 218B considered significant?

• It is the largest planet discovered so far.

• It is the closest planet to Earth.

• It is the first rocky planet with an atmosphere and water vapor.

• It is the first planet discovered outside our galaxy.

What are biomarkers in the context of planetary exploration?

• The temperature range of a planet.

• The gravitational pull of a planet.

• Chemical fingerprints indicating potential life.

• Physical features of a planet's surface.

How is Kepler 218B described in terms of its size compared to Earth?

• It is larger than Neptune.

• It is larger than Earth but smaller than Neptune.

• It is the same size as Earth.

• It is smaller than Earth.

What is the uncertainty regarding the water content on Kepler 218B?

• It has a fixed amount of 10% water.

• It is entirely covered in water.

• It could have between 0.01% to 50% water.

• It could have no water at all.