SOLAR SYSTEM

Detailed explanation-1: -Answer and Explanation: Because it is so far form the Sun, the region of the Oort cloud is also extremely cold, estimated to have a temperature of between 5-6 Kelvin, or just 5 or 6 degrees above absolute zero, and about the same as the background radiation that is scattered through the universe.

Detailed explanation-2: -The Oort cloud must have been created from icy planetesimals that originally accreted in the outer part of the protoplanetary disk and were then scattered far away by the gravity of the incipient giant planets.

Detailed explanation-3: -While the planets of our solar system orbit in a flat plane, the Oort Cloud is believed to be a giant spherical shell surrounding the Sun, planets and Kuiper Belt Objects. It’s like a big, thick bubble around our solar system, made of icy, comet-like objects.

Detailed explanation-4: -The Oort cloud has never been observed but is thought to be a spherical distribution of icy objects like comets orbiting our Sun at distances between 3000 and 100, 000 AU.

Detailed explanation-5: -The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them toward the inner Solar System.

Detailed explanation-6: -Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.