asterism stability

Quiet stellar asterisms stabilized by potential-for-kinetic energy exchange among stars passing internal neighbors, may be brooding-nests for spacer civilizations

A para-orbitation degeneracy stability:

As stars in a quiet cluster cross their asterism-space at near-parabolic velocities, their exchange of energy with passing moving stars is predominantly perpendicular to their direction of travel:-- To meet, two stars must draw to a convergent point: but in the presence of a third, the gravitation drawing the two together is gradually converting to perpendicular motion sending them into more-different passing-orbits drawing them more askew: effectually raising the dimensionality of meeting any 'destination' star, and so improving the asterism stability.... Overall system potential-and-kinetic energy is retained till it settles into more-stable striating rhythms.

Example, a system of a thousand stars within a thousand-AU diameter, of smallish suns averaging 100 AU separation, crossing-through at a mile-per-second, taking 3-thousand years to cross, each with a direct likelihood of meeting another 1/100M, totalling 1/10K/3K = 1/30M years, meeting, decreased by asterism stability, may be survived by billions of years of space-going civilizations as old as our galaxy, encouraged by the proximity of stars, stellar passings over hundreds of years, the availability of planets to colonize, and soon enough competitive technologies in developing stellar and interstellar neighborhoods, and thence visiting "space aliens" ... Eventually, a pair of stars will be destroyed,- but more frequently, by 1/10K years, a star will pass so close as to disrupt a bio-planet and drive its entire civilization to recognize the approaching doom and take a mass-exodus,-- eventually not-necessarily to other local planets.

Tight asterisms may be abundant as "red giants" unresolved at distance, and former subgalaxy cores from the galaxy coalescence era.

External, interstellar travel:

In the case of giant-stellar novæ, planet escape-velocities at Loss-Of-Orbit are typically -like our Earth- in the range of 10-30 mps, capable of spanning 100 light-years in millions of years, cf 'Ra's Boat of Millions ('years') from the passed Southern Cross group now 500 light-years distant itself.

This article was developed in part for a project Sesquatercet movie-story.

A premise discovery under the title,

Grand-Admiral Petry
'Majestic Service in a Solar System'
Nuclear Emergency Management

2004, 2005, 2008 GrandAdmiralPetry@Lanthus.net