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-1 votes
1 answer
58 views

I want to know about the synodic and sidereal months. Why is there a difference between the two? [closed]

I want to know about the synodic and sidereal months. Why is there a difference between the two?
Ashwini Kumar's user avatar
-1 votes
3 answers
947 views

Confusion about angular momentum of earth-moon system

My assumed definition of angular momentum is the sum over $i$ of $L_i =r_i\times{\omega_i}\times{r_i}$ for each particle about some origin. We have two spheres rotating about the centre of orbit. For ...
user avatar
1 vote
1 answer
670 views

Does Earth rotate around its geometrical axis OR the center of mass of Earth-Moon system?

I just came to know about barycentre. What exactly is this?
Zaid AAmir's user avatar
12 votes
4 answers
3k views

If we were on the Moon would Earth appear to be in motion or at rest?

If we were on the moon would earth appear stationary or would it appear to move. I think it must be stationary because moon is in sychronous rotation with earth.
Matt's user avatar
  • 644