How Do We Know What Air is Like on Other Planets?

The video explains how scientists study the atmospheres of planets, moons, and exoplanets by analyzing light that interacts with these atmospheres. By examining the light's absorption and emission fingerprints, scientists can identify the gases present and their relative abundances. This method allows for the study of distant exoplanets' atmospheres without direct observation. Despite challenges such as faint signals and complex atmospheres, astronomers use advanced telescopes and techniques to overcome these obstacles and gain insights into atmospheric compositions far beyond our solar system.

How can scientists study the atmospheres of planets and exoplanets without visiting them?

Describe the process by which light is used to analyze the composition of a planet's atmosphere.

What gases are mentioned as being present in the atmosphere of the exoplanet HD2O9458B?

What is the significance of molecular fingerprints in studying exoplanet atmospheres?

What challenges do astronomers face when using molecular fingerprints to study exoplanet atmospheres?