What recent hypothesis suggests that a large fraction of Oort Cloud objects might not have formed in our solar system?
Answer
They were captured from the protoplanetary discs of sibling stars.
Recent simulations suggest that the Sun, while in a stellar cluster, may have captured icy planetesimals from the protoplanetary discs of its stellar siblings.
#Videos
The Oort Cloud: Crash Course Astronomy #22 - YouTube
Related Questions
Where are long-period comets believed to have their distant, frozen origins?What is the famous moniker used to describe the composition of these icy bodies?What is the primary geometric characteristic separating the Oort Cloud from the Kuiper Belt?What is the approximate starting distance (inner boundary) of the Oort Cloud from the Sun?What is the name for the denser, torus-shaped inner region theorized to exist within the Oort Cloud?Which process is credited with originally scattering the planetesimals out to the Oort Cloud?What recent hypothesis suggests that a large fraction of Oort Cloud objects might not have formed in our solar system?What external influence is suggested to be the primary driver for up to 90% of observed long-period comets?What happens to a comet after repeated close passes near the Sun cause it to lose most of its ice?Why do long-period comets appear to come from every direction in the sky?