The Invisible Earths
01- 2003 VB12: Sedna
02- AU
03- The Kuiper Belt
04- The Oort Cloud
05- Invisible Earths
06- Full System
07- Baby Worlds

04 -The Oort Cloud

Thomas Wright's illustration for his book,
'An Original Theory or New Hypothesis of the Universe'
Circa: 1750
The first conception and earliest depiction of The Oort Cloud
and the clouds of neighboring stars.


Long-period comets reside in the outer reaches of the solar system in a region called the Oort Cloud.

It is estimated that there are at least 35,000 Kuiper Belt objects greater than 100 km in diameter and as many as a trillion comets within the Oort cloud.

The outer limits of the Oort Cloud extend nearly halfway to the nearest star.

Alan Lambert 2009