Stars as triggers of comets?
What does the following statement mean:
"Researchers suspect that stars passing by the solar system use their gravitational pull to push comets out of their original orbit, causing them to head toward the sun."
https://www.ardalpha.de/wissen/weltall/astronomie/komet- Schwanzsterne-kometen-100.html
A comet is expected to appear in the night sky in the next few days. What stars could have caused this? Alpha Centauri, invisible dwarf stars, or even inactive neutron stars?
(3 votes)
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…three days a comet in the night sky…
Do you think comet C/2023 A3 Tsuchinshan-ATLAS
The Numeric eccentricity be 1,00014 -> Railway is hyperbolic -> comes from far, far… from the “end” of the solar system (SS), Oort cloud or extra solar, i.e. from outside the SS.
No one can now say (calculate) current measured values, where this ice core comes from, let alone who should have directed it to us, if at all.
By the way, this must not have been a single object (star, planet), but also through the “sum of gravity” of “all” the other (no) objects at the edge of the SS.
Only because the comet appears today in the inner solar system does not mean that a star has recently passed.
That may have happened hundreds of millions or billions of years ago. The railway was only minimally changed so that we only see the consequences today.
is there evidence of a star that once came into the vicinity of the sun?
When a gas cloud collapses, virtually many stars are created more or less at the same time, i.e. they will have been denser in their early days than today, which in a dynamic system increases the likelihood of approximations.
With billions of years old stars like the sun, there will also be approaches on their later path, which we cannot understand today.
There are some exceptions. Scholz’ star [sic] the sun was supposed to have come close to a distance of only 0.82 light years ago 70,000 years ago, which should have caused a stir in the Oortian cloud.
Hard to find exact sources:
https://de.wikipedia.org/wiki/WISE_J072003.20%E2%88%92084651.2
https://de.wikipedia.org/wiki/HD_7977
….
thanks for the link.
“Scholz Stern”, a red dwarf surrounded by a brown dwarf. This reminds me of the political situation in Germany. 😅
Thank you, good links.
Our sun has sometimes close encounters with other stars during its circulation around the center of the Milky Way. If the other star of the sun comes quite close, then the gravitation of the other star can deflect objects of the Kuiper girdle and/or the Oort cloud into the inner solar system, whereby these icy chunks become mates, which then increasingly fly towards the earth and can also increasingly strike them. Fortunately, such encounters with other stars are very rare, because the sun needs about 240 million years for the roundabout of the Milky Way Centre. This comet named by you is not a result of such an encounter, but it is probably an object of the outer Oort cloud and therefore belonging to the solar system, so it has probably emerged with the solar system, but it is not yet known.
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The solar system m.W. needs about 220 million years for a circulation around the milk tits. You can’t close this directly, but give you an idea of how often a star moves past the sun, because it has a faster inner or slower outer path, all million years of jubilation.
Such a close star can, of course, throw one out of the path, but after the passage of the star the orbits stabilize again. At the moment, many comets arrive at regular intervals near the sun, with the distances differing significantly.
So what appears here today as a comet can have been distracted by a star, which is now about thousands of light years away from us and can no longer be identified. The stars are not only distracting comedians, but also each other. After some such (also only lighter) distractions, the chaos theory comes to bear.
First and foremost, rs are the large outer gas9lanets that do so. But rs also gives stars that have already moved close by. The last 70000 years ago, even a double star. I’m sure Diw’s been swirling a lot out. Give ‘Otto’s star. I don’t think if this comet comes here.
at Otto’s star, I only receive a molecular biologist, Otto Stern.
https://www.derstandard.de/story/2000076646663/in-der-steinzeit-kam-ein-stern-unserem-sonnensystem-zu-nah
Sorry, sorry. How do I get to Otto?? Scholz Stern. :-))
thanks for the link!
Nobody knows. There are many things that influence the path of a comet. It can be billions of years ago when our solar system was still in the origin that a star at the time gave the comet the first thrust. He can be somewhere else or no longer exist.
This is as similar as if you know that a butterfly’s wings can trigger a storm and you would ask which butterfly is responsible for the hurricane in Florida.
However, the average life of a comet is about 100 umlaeufes around the sun. The average frequency is 200 years per revolution. You don’t get to billion years.
Time and distance play only a very small role in space. Such a comet can be billions of years old and thrown from one of the most distant stars of our galaxy. He can be floated through the galaxy these billion years and meet the Earth or even fly past it.
sorry, but the more the star is gone, the more the gravity acts. Since there are stars in the vicinity of the comet, a distant star has practically no influence.
The star only has to push it out of the train once. If he takes course on a planet and flies past it, he takes speed and because there is nothing in space that slows him, he keeps this speed for billions of years until he arrives with us. That means he only needs the influence for the start. The rest is happening all by itself.
For example, a star at the other end of the galaxy. No one has to be from our neighborhood.
And what stars should that be? See question above.