Hal Levison, dynamicist and cosmogonist, estimates here that 6% or more of NEOs are old Jupiter-family comets… which implies some very handy water and kerogen in interplanetary space.
Comets amongst the NEOs
Nisi cognitio finitas, infinitum sit necesse est ignoratio
Hal Levison, dynamicist and cosmogonist, estimates here that 6% or more of NEOs are old Jupiter-family comets… which implies some very handy water and kerogen in interplanetary space.