"Apart from long-period comets, only four known objects have orbits which suggest that they may belong to the Oort cloud: 90377 Sedna, 2000 CR[SUB]105[/SUB], 2006 SQ[SUB]372[/SUB] and 2008 KV[SUB]42[/SUB]. The first two, unlike scattered disc objects, have perihelia outside the gravitational reach of Neptune, and thus their orbits cannot be explained by perturbations from the gas giant planets."jmog;1084821 wrote:You know the whole thought process behind how an "Ort Cloud" came to as a theory?
I wish I was kidding.
"The Universe is 4.5 billion years old, comets can only survive for at most 10,000-20,000 years, and we still have comets. So, they must be created somewhere."
Jan Ort is the one that first had this idea, so it is called an Ort Cloud.
No scientific basis behind the theory at all, just conjecture and logic.
You have outdated info.