Aliens

What is the speed limit of our universe?

• The speed of light

• there is no limit

• 7 miles per second

• The speed of sound

Tags

NGSS.HS-PS4-3

What does SETI stand for?

• strange exoplanet tracking investigation

• search for extraterrestrial intelligence

• signals of extraterrestrial invariance

• saturnian egress tames interstelarity

A mathematical trick for finding an order of magnitude middle value between an overestimate and an underestimate.

• geometric mean

• arithmetic mean

• average

• random guess

When attempting to solve a Fermi Question, it is important to first...

• look up the answer

• identify assumptions and factors

• ask someone else for help

• try to improve your calculation

Enrico Fermi was famous for...

• his popular educational TV series about aliens.

• quickly finding solutions to questions with a number answer.

• discovering faster-than-light travel.

• his love of cats.

The volume of your backpack is closest to...

• 1 meter^3

• 1 parsec^3

• 1 kilometer^3

• 1 micron^3

The Drake Equation answers the question...

• "What is the number of detectable alien civilizations in the Milky Way?"

• "How many people are picking their nose right now?"

• "What is the shortest time to colonize the Galaxy?"

What is the biggest obstacle to interstellar travel today?

• The speed of our spacecraft.

• The cost of training our astronauts.

• Calculating a trajectory to the nearest stars.

The geometric mean of 2 and 18 is...

• 1

• 3

• 6

• 12

The apparent contradiction between the estimated high probability of alien life and a lack of evidence for its existence is called...

• The Fermi Paradox.

• The Goldbach Conjecture.

• Fermat's Last Theorem.

• The Grandfather Paradox.