TED: Why earth may someday look like Mars | Anjali Tripathi

The video explores the concept of atmospheric escape, a process where gases from a planet's atmosphere are lost to space. It discusses how this phenomenon occurs on Earth, Mars, and exoplanets, and its implications for planetary science. The video highlights the role of the Sun in driving atmospheric escape and examines the future of Earth's atmosphere as the Sun brightens. It also covers the study of transiting exoplanets and the insights they provide into atmospheric escape.

What is the phenomenon where gases like hydrogen and helium escape from Earth into space called?

• Gravitational binding

• Atmospheric retention

• Planetary shielding

• Atmospheric escape

What fundamental force is responsible for the round shape of planets?

• Nuclear force

• Gravity

• Magnetism

• Electromagnetism

What is the main reason stars cause atmospheric escape on planets?

• Stars have strong gravitational pull

• Stars provide particles, light, and heat

• Stars emit magnetic fields

• Stars create tidal forces

Which planet is known as the 'red planet' due to atmospheric escape affecting its surface?

• Saturn

• Venus

• Mars

• Jupiter

How does atmospheric escape contribute to Mars' red color?

• By freezing the surface

• By oxidizing the surface

• By reflecting sunlight

• By covering it with dust

What is the name of the NASA satellite studying atmospheric escape on Mars?

• MAVEN

• Voyager

• Galileo

• Hubble

What are planets orbiting stars other than our Sun called?

• Comets

• Exoplanets

• Dwarf planets

• Asteroids

What is the term for planets that pass in front of their star, causing the star's light to dim?

• Rotating planets

• Transiting exoplanets

• Eclipsing planets

• Revolving planets

What is the expected future of Earth as the Sun becomes brighter?

• Earth will become a gas giant

• Earth will move closer to the Sun

• Earth will develop a thicker atmosphere

• Earth will become more like Mars

What are 'hot Jupiters'?

• Planets with no atmosphere

• Gas planets like Jupiter, but much closer to their star

• Rocky planets close to their star

• Icy planets far from their star