The Oort cloud (), sometimes called the Öpik–Oort cloud, is a theoretical concept of a cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 2,000 to 200,000 AU (0.03 to 3.2 light-years).

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Passing star could fling Earth out past Pluto into the Oort cloud

There Could Be Captured Planets in the Oort Cloud

Oort cloud (exo)planets

Meteoroid from Oort Cloud Was Made of Rock, Not Ice, Scientists Say

Grapefruit-size fireball from mysterious Oort Cloud could rewrite the history of the solar system

The Oort Cloud Could Have More Rock Than Previously Believed. (Based on a study of a meteoroid that burned up in the sky over Alberta in 2021)

The Oort Cloud Could Have More Rock Than Previously Believed

Oort cloud comets may spin themselves to death

Largest known comet from Oort Cloud captured by Hubble

using Kuiper belt and Oort cloud objects to terraform Mars

The Oort Cloud

Mega Comet Arriving From the Oort Cloud Is 85 Miles Wide

The Solar System's Oort Cloud May Harbor an Astonishing Number of Objects from Other Stars

Interstellar Objects Might Outnumber Solar System Objects in the Oort Cloud

Study: Interstellar Visitors Outnumber Solar System Objects in Oort Cloud

Mysteries of the Oort Cloud at the Edge of Our Solar System

Giant Oort Cloud Comet Lights Up in the Outer Solar System

Space object with orbit stretching into the Oort cloud discovered. Measurements of the object put it between the size of a very small planet and a comet. Its orbit is nearly perpendicular to the plane created by the 9 inner planets and One trip around the sun has been calculated to take 612,190 yrs.