Closer
The Main Planetoid Belts are also a couple billion miles closer
than the Kuiper Belt, so that plays a factor in their discovery
as well. Plus my previous comment on the fact that many
astronomers were not looking for KBOs.
Space/Science » in reply to re: And other arguments
The Main Planetoid Belts are also a couple billion miles closer
than the Kuiper Belt, so that plays a factor in their discovery
as well. Plus my previous comment on the fact that many
astronomers were not looking for KBOs.