NASA | Using Color to Search for Alien Earths

The video explores how planets reflect light differently based on their atmospheres and compositions. It highlights the Deep Impact mission's role in studying light reflection from Earth, the Moon, and Mars. A pattern emerges showing how planets like Mars, Venus, and Earth reflect varying amounts of red and blue light. Earth's unique atmosphere makes it stand out by reflecting more blue light. The video concludes with the potential to study extrasolar planets' colors, allowing us to differentiate between alien versions of known planets.

What was the primary objective of the Deep Impact mission mentioned in the video?

• To explore the atmosphere of Venus

• To analyze the light reflected by celestial bodies

• To study the surface of Mars

• To measure the gravitational pull of Jupiter

How does the reflection of red light affect a planet's position on the chart?

• It moves the planet to the right

• It moves the planet lower on the chart

• It moves the planet to the left

• It moves the planet higher on the chart

Which planet is identified as the reddest on the chart?

• Mars

• Venus

• Earth

• Jupiter

Why does Earth appear blue on the chart?

• Due to its proximity to the Sun

• Due to its atmosphere reflecting blue light

• Because it absorbs red light

• Because of its oceans

What future capability is suggested by the video regarding extrasolar planets?

• We will be able to visit them

• We will be able to measure their gravitational fields

• We will be able to determine their colors and differentiate them

• We will be able to communicate with them