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Android17
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If this is true where is the core of that star, either a neutron star or a black hole should exist near by, right?
rootone said:The solar system resulted from the collapse of a cloud of dust and gas, as do other star systems.
That cloud existed first because of there being lots of gas in the galaxy anyway and then some additional contribution of heavier elements from supernovea,
This collapse started to occur about 4,5bn years ago.
There cannot be any evidence of a SN (or several) occurring in the galaxy that long ago.
Black holes and neutron stars are not thought to have much to do with the formation of the Sun or other stellar systems.
There may be neutron stars somewhere in the galaxy whose progenitor SN produced material which now is part of Earth.
If there are, they don't need to be close to where the Solar system is now,
No, but supernovae are relevant.rootone said:The solar system resulted from the collapse of a cloud of dust and gas, as do other star systems.
That cloud existed first because of there being lots of gas in the galaxy anyway and then some additional contribution of heavier elements from supernovea,
This collapse started to occur about 4,5bn years ago.
There cannot be any evidence of a SN (or several) occurring in the galaxy that long ago.
Black holes and neutron stars are not thought to have much to do with the formation of the Sun or other stellar systems.
Or, indeed, in Milky Way at all.rootone said:There may be neutron stars somewhere in the galaxy whose progenitor SN produced material which now is part of Earth.
If there are, they don't need to be close to where the Solar system is now,
No.Android17 said:Why they don't need to be close? The gases would eventually start to revolve around the nucleus of the dead star, right.. Unless something else pull it away from it?
Chronos said:The solar system likely includes remnants from multiple sources - although probably precious little, if any, came from the supernova responsible for the suspected shock wave that triggered collapse of the gas cloud from which the solar system arose.
unusually_wrong said:My understanding is that our solar system began as a gas cloud. It began to pull together ...
stefan r said:Right. But there was a shock wave before it collapsed. Short-lived supernova material punched into the material that became asteroids. link.
Turbulence from the shock would have adjusted the timing of stellar collapse. The trigger mechanism.
If it is in the liquid state radiometric dating does not work. We need samples from the crust. The date given is the time that it crystallized.Chronos said:...we have few if any pristine samples from Earth's core...
A neutron star is a highly dense remnant of a supernova explosion, composed almost entirely of neutrons. A black hole is a region of spacetime where the gravitational pull is so strong that nothing, not even light, can escape.
Scientists use a variety of methods to search for neutron stars and black holes. These include studying the properties of stars, observing the effects of their gravitational pull on surrounding objects, and looking for signatures of X-rays and other emissions.
Studying neutron stars and black holes can help us better understand the fundamental laws of physics, including gravity and the nature of space and time. Additionally, these objects can provide valuable insights into the evolution of the universe and the processes that govern the formation and destruction of stars.
If a neutron star or black hole were to come too close to our solar system, it could potentially disrupt the orbits of planets and other celestial bodies. Additionally, the intense gravitational pull of these objects could have catastrophic effects on any nearby stars or planets.
Yes, a few neutron stars and black holes have been discovered relatively close to Earth. For example, the nearest known black hole is V616 Monocerotis, located about 3,000 light years away. The nearest known neutron star is the pulsar PSR J0108-1431, located about 770 light years away.