- #1
Loren Booda
- 3,125
- 4
Has the existence of a planetary disk condensed as a rigid aggregate ever been postulated or observed?
Not that I have ever heard of, until yesterday at 11:06 PM...Loren Booda said:Has the existence of a planetary disk condensed as a rigid aggregate ever been postulated or observed?
ray b said:like saturn's rings?
OK, now this is a different ball of wax. You're talking about a body rotating so fast that it is being radically deformed. It will not be stable over long periods.Loren Booda said:How can one express the critical limit of failure with respect to the eccentricity for a rotating rigid body?
zero? Did you mean eccentricity or oblateness?Loren Booda said:What is the maximum eccentricity of a stable, fluid oblate spheroid?
The galaxy is pretty oblate and a self gravitating body of dust (stars) and gas.Loren Booda said:Garth,
Please address the question in regards to oblateness.
The shape would depend on the fluid, its density, total mass of the body, speed of rotation, viscosity etc. but the answer is yes! The actual detail would be quite complicated to calculate.Loren Booda said:Could a fluid also form a stable, rotating, significantly oblate, self-gravitating spheroid?
That's what Saturn is, sans rings. Saturn is visibly oblate.Loren Booda said:Could a fluid also form a stable, rotating, significantly oblate, self-gravitating spheroid?
A solid planetary disk, also known as a protoplanetary disk, is a rotating disk of gas and dust that surrounds a young star. It is the birthplace of planets and other celestial bodies.
A solid planetary disk is significant because it is where planet formation occurs. The dust particles in the disk clump together to form larger bodies, eventually becoming planets. It also provides valuable information about the early stages of our own solar system.
Scientists study solid planetary disks using various methods, including telescopes that can detect infrared radiation, which is emitted by the warm gas and dust in the disk. They also use computer simulations to model the formation and evolution of these disks.
Yes, solid planetary disks can exist in different shapes depending on the characteristics of the central star and the surrounding environment. For example, some disks may be flatter or more elongated than others.
Studying solid planetary disks can provide valuable insights into the formation and evolution of planets, as well as the conditions necessary for life to exist in other solar systems. It can also help us better understand the early stages of our own solar system and how it may have evolved over time.