What are the most extreme years in the universe?

The video explores the concept of years on different celestial bodies, starting with Mercury's short year and long day. It explains how exoplanets are detected and why most have short years. The shortest known year is on a pulsar, while the shortest around a main sequence star is K2-137 b. The longest planetary year is around a Jupiter-type object, and the longest overall is a galactic year, taking 250 million years. The video concludes by reflecting on the vastness of space and time.

How long is a year on Mercury in Earth days?

• 1 Earth day

• 365 Earth days

• 176 Earth days

• 88 Earth days

Why do most known exoplanets have short years?

• They have stronger gravitational pulls

• They are detected more easily due to frequent transits

• They are larger in size

• They are closer to their stars

What is the shortest known year around a pulsar?

• 1 Earth year

• 48 minutes and 58.5 seconds

• 1.5 Earth days

• 4.31 hours

What is the shortest known year around a main sequence star?

• 4.31 hours

• 1 Earth day

• 1.5 Earth days

• 88 Earth days

What is the longest known planetary year?

• 1 million years

• 4.5 billion years

• 88 Earth days

• 250 million years

How long is a Galactic year for Earth?

• 250 million years

• 1 million years

• 4.5 billion years

• 88 Earth days

How many Galactic years old is Earth?

• 18 Galactic years

• 250 Galactic years

• 1 million Galactic years

• 4.5 billion Galactic years