If a massive body fails to become a star could it still suport planetary system?

In summary, a massive body "fails" to become a star when it does not have enough mass to sustain nuclear fusion reactions in its core. This failure can occur due to a variety of reasons, such as being too small or not having enough of the right materials. However, even without becoming a star, these massive bodies can still support a planetary system. The absence of a star can affect the formation of a planetary system in various ways, including impacting the composition of the planets and their ability to support life. While there are known examples of planetary systems without a star, they would likely have very different conditions for life to exist.
  • #1
wolram
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if a massive body fails to become a star could it still suport
planetary system?
 
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  • #2
Originally posted by wolram
if a massive body fails to become a star could it still suport
planetary system?
Sure, it would be called a "mini system" like Jupiter, Saturn, etc. with numerous moons (planets) orbiting around. Anything under ~0.08 solar masses won't start fusion, but other objects can still form and orbit.

Labguy
 

1) What does it mean for a massive body to "fail" to become a star?

A massive body "fails" to become a star when it does not have enough mass to sustain nuclear fusion reactions in its core. This failure can occur due to a variety of reasons, such as being too small or not having enough of the right materials.

2) Can a massive body that fails to become a star still support a planetary system?

Yes, a massive body that fails to become a star can still support a planetary system. The formation of planets does not necessarily require a star, as long as there is enough mass and material present to form them. In fact, there are examples of planets orbiting brown dwarfs, which are massive bodies that failed to become stars.

3) How does the absence of a star affect the formation of a planetary system?

The absence of a star can affect the formation of a planetary system in several ways. Without a star, there is no source of heat and light, which can impact the composition of the planets and their ability to support life. Additionally, the lack of a strong gravitational pull from a star can lead to less stable orbits for the planets.

4) Are there any known examples of planetary systems without a star?

Yes, there are known examples of planetary systems without a star. These are often referred to as "rogue planets" or "free-floating planets" and can exist on their own in interstellar space. They are thought to have formed in a similar way to planets orbiting stars, but were either ejected from their original system or formed on their own without a star.

5) Could a planetary system without a star be habitable for life?

It is possible for a planetary system without a star to be habitable for life, but it would likely be very different from our own solar system. Without a star, the planets would not have a source of energy, so any potential life would need to rely on other sources, such as geothermal energy. Additionally, the lack of a star's radiation and solar wind could make it easier for life to survive on these planets. However, the conditions for life on such planets would be very different and may require different forms of life to exist.

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