-
Coud Postulated
The cloud theory was postulated by Estonian Astronomer Ernst Opik -
Cloud Revived
Oort Cloud theory is proposed by dutch astronomer Jan Oort, and is accepted by the scientific community. -
Inner Cloud
J.G. Hills proposes the idea of an inner oort cloud -
Sun's Twin Hypothesis
Richard A. Muller hypothesises that the sun has a red or brown dwarf companion, Nemisis, that passes through the oort cloud every 26 million years -
Jupiter traps stray comets
Comets from the inner oort cloud that come within Jupiters gravitational pull are trapped and forced to collide with the planet -
Universe transformed into galactic plane
John Matese and Patrick Whitman and their collegues created a galactic plane to track comets and astroids in the oort cloud -
Galactic Plane Expanded
Matese and Daniel Whitmire track a certain group of astroids and find that some are forced out by larger and more powerful astroids -
Tyche
Matese hypothesises that more comets are entering the inner solar system. It has been thought that a gas giant, Tyche, is causing these astroids and comets to leave the normal orbit. -
WORKS CITED
"Oort Cloud." Timetoast. N.p., n.d. Web. 12 Dec. 2013.
