An ordinary person can think about his/her family health, food, income…. But a science student, a Lecturer, a Scientist can think about TIME and can see the sky at night with stars , galaxies and their motions with their imagination power.
They can think about the existence of human life and time period.
Where we are in the Universe?
To which direction we are moving?
Who can moving us?
Is there any END point?
How long it happens?
Can we increase our life time ?
Once the Bicycle rider keep on produce changes the Torque force on pedals , it may increase or decrease the Angular Momentum . If he does not produce torque change then it keeps the constant angular momentum that is motion continues.
Till now our Scientists doing research to find that Torque on Universe? They names it as Big Bang.