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originally posted by: sosobad
Cheers swanne , as I said there is possibly hundreds of pages worth of information one could write about the Kuiper. I am just hoping that it stirs people to take an interest in our own backyard so to speak, that and I had a bit of time to burn, I usually don't get that luxury these days lol
originally posted by: nfflhome
What the hell is 2001QG298 ?
Is that type of spin to create a stable gravity inside the object?
I had never heard of this object.
Thanks for teaching me something today!!
originally posted by: BornAgainAlien
a reply to: sosobad
I feel ashamed as a Dutch person somewhat having heard the name The Kuiper (very distinct Dutch name) Belt many times before not having any knowledge about it...at least I have some now, thanks!
In 1932, the Estonian astronomer Ernst Öpik postulated that long-period comets originated in an orbiting cloud at the outermost edge of the Solar System. The idea was independently revived by Oort as a means to resolve a paradox. Over the course of the Solar System's existence the orbits of comets are unstable and eventually dynamics dictate that a comet must either collide with the Sun or a planet or else be ejected from the Solar System by planetary perturbations. Moreover, their volatile composition means that as they repeatedly approach the Sun, radiation gradually boils the volatiles off until the comet splits or develops an insulating crust that prevents further outgassing. Thus, Oort reasoned, a comet could not have formed while in its current orbit and must have been held in an outer reservoir for almost all of its existence.
The outer Oort cloud may have trillions of objects larger than 1 km (0.62 mi), and billions with absolute magnitudes brighter than 11 (corresponding to approximately 20-kilometre (12 mi) diameter), with neighboring objects tens of millions of kilometres apart. Its total mass is not known, but, assuming that Halley's Comet is a suitable prototype for comets within the outer Oort cloud, roughly the combined mass is 3×1025 kilograms (6.6×1025 pounds), or five times that of Earth. Earlier it was thought to be more massive (up to 380 Earth masses), but improved knowledge of the size distribution of long-period comets led to lower estimates. The mass of the inner Oort cloud has not been characterized.
If analyses of comets are representative of the whole, the vast majority of Oort-cloud objects consist of ices such as water, methane, ethane, carbon monoxide and hydrogen cyanide. However, the discovery of the object 1996 PW, an object whose appearance was consistent with a D-type asteroid in an orbit typical of a long-period comet, prompted theoretical research that suggests that the Oort cloud population consists of roughly one to two percent asteroids. Analysis of the carbon and nitrogen isotope ratios in both the long-period and Jupiter-family comets shows little difference between the two, despite their presumably vastly separate regions of origin. This suggests that both originated from the original protosolar cloud, a conclusion also supported by studies of granular size in Oort-cloud comets and by the recent impact study of Jupiter-family comet Tempel 1.
A small team had initially proposed a beryllium inflated sail that would go down to 0.05 AU from the Sun in order to get an acceleration peaking at 36.4 m/s2, reaching a speed of 0.00264c (about 950 km/s) in less than a day
Such a sail would take "Two and a half years to reach the heliopause, six and a half years to get to the Sun’s inner gravitational focus (at about 550 AU, the point at which light is focused by gravity as it passes the sun), with arrival at the inner Oort Cloud in no more than thirty years