The solar system is teeming with 1 million 'alien invaders' from Alpha Centauri

[Admin]

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha Centauri, new research has revealed.

The solar system is teeming with 1 million 'alien invaders' from Alpha Centauri : Read more

 

[Mark3141]

The idea that objects, e.g., rocks, are arriving from the Alpha Centauri system in our solar system appears reasonable and to be expected. However, the study is only a first order crude approximation of the actual interactions. While the study noted the Alpha Centauri system will make its closest pass in about 28,000 years, it simulated the environment between our solar system and the Alpha Centauri system as otherwise unchanging for 100 million years, giving objects from Alpha Centauri plenty of time reach us. If we take the 28,000 years timeframe for our close pass to be typical, there would have been nearly 4,000 close passes by other stars in that 100 million years. Thus, it is a good bet than many of the objects anticipated to be from the Alpha Centauri system come from other sources.

 

[motie]

The universe is a big blender. Galaxies collide. All of the heavy elements on Earth come from supernova explosions a long time ago. An old solar system like Alpha Centauri would likely hold its masses in stable orbits. But there will always be disruptive events like collisions, especially out at the far reaches of the sun's gravitational field, where bodies are held weakly.

 

[DrRaviSharma]

Reverse might be true?
How do we know as to how many of Oort cloud objects have been former comets or asteroids captured in those clouds!
Dohnanyi meteorite type curves for size distributions may have to be developed based on gravitational perturbations on multipole distributed gravitational field to test reasonable accretion rates and their size distributions in at least Oort clouds. This may also be tested for known objects as well, e.g. in Kuiper belts, known populations in asteroid belt and motions and aggregations (to get ideas on density variations)!

 

[jumphunter]

The universe is a big blender. Galaxies collide. All of the heavy elements on Earth come from supernova explosions a long time ago. An old solar system like Alpha Centauri would likely hold its masses in stable orbits. But there will always be disruptive events like collisions, especially out at the far reaches of the sun's gravitational field, where bodies are held weakly.

The fact that it's a trinary, even with the distance from proxima centauri, probably helps send those border cases on their journeys...