An imagined view of the Oort cloud, a massive field of icy bodies at the outer edge of our solar system. Lines illustrate the theory that some asteroids were flung out to this distant region in the early days of the solar system& formation.
The sun, planets and Voyager probes sit inside the tiny yellow dot at right, within a giant sphere called the Oort cloud. This reservoir of trillions of ice chunks extends astronomical units out, tethered to the sun by gravity. Astronomers believe
long-period comets come from Oort cloud; their orbits suggest that the cloud is a spherical shell close to a light-year across, bisected by a doughnut; the rest of the solar system lies in the doughnut hole
What is the Oort Cloud? The Oort Cloud is an extended shell of icy objects that exist in the outermost reaches of the solar system. It is named after astronomer Jan Oort, who first theorized its existence. The Oort Cloud is roughly spherical.
The Oort Cloud is the massive spherical cloud that encases our entire Solar System. It is thought to extend from AU (an AU is equal to the distance from the Sun to the Earth), out to about AU, which is nearly a light year. It& composed