ANCHORAGE 6.30 JUNEAU 7.1 | 7.2 SITKA 7.4

The Oort cloud is a hypothesized

spherical cloud of comets

that lies one light-year from the Sun.

It is only loosely bound to the Solar System,

and thus, is easily affected by gravitational pull.

These forces occasionally dislodge comets from their orbits

and send them towards the inner Solar System.