"Yes, Aliens (Probably) Exist" Quiz

The first section of “Yes, Aliens (Probably) Exist” describes -

• the author’s idea of what an invasion from outer

  space would be like.

• a time in 1938 when space aliens invaded New

  York City.

• a time in 1938 when people thought space aliens

  had landed in New York City.

• the history of space exploration.

One likely reason we haven’t found life on

other planets yet is that -

• outer space is huge.

• no other planets have water.

• no one is brave enough to visit other planets.

• scientists are not looking for life in outer space.

Which line from the article supports the

answer to question 2?

• “According to some estimates, there are 300 sextillion stars.”

• “Let’s start with Earth.”

• “It must be similar in size to Earth.”

• “But they have made some amazing discoveries.”

Why does the article call Kepler-452b “Earth's bigger, older cousin”?

• Kepler-186f looks exactly like Earth.

• The planets are similar in size and temperature.

• The planets are home to similar animals.

• The planets are exactly the same age.

The entire article is mainly about -

• the importance of a planet's size.

• a 1938 radio show and it's effect on its listeners.

• the possibility that alien life exists.

• what alien life possibly looks like.

According the article, the alien life we find might be -

• a hybrid animal

• a germ

• another race of humans

• a robotic lifeform

For a planet to support life, it must (Choose THREE) -

• be the right size.

• have water.

• contain natural shelters such as caves.

• be just close enough to an orbiting star.