Exploring the Universe and the Search for Extraterrestrial Life

What is the estimated number of habitable planets in the universe according to modern research?

• 1.2 trillion

• 3.5 trillion

• 5.3 trillion

• 7.8 trillion

Why are red dwarf stars considered challenging hosts for habitable planets?

• They are too bright and hot.

• They are too faint and cause tidal locking.

• They have no planets orbiting them.

• They are too far from Earth.

What is a significant challenge in detecting life on distant planets?

• Lack of telescopes

• Inability to detect oxygen and methane

• Too many planets to explore

• Planets are too small

What is the zoo hypothesis in the context of extraterrestrial life?

• Aliens are kept in zoos on Earth.

• Advanced civilizations avoid contact to let us develop naturally.

• Humans are observed by aliens in a zoo-like manner.

• Aliens are studying Earth's wildlife.

What is a potential reason why we haven't met extraterrestrial civilizations yet?

• They do not exist.

• They are avoiding contact to let us develop.

• They are hostile and hiding.

• They are too far away.