The stars as seen from Earth would have looked dimmer 14 million years ago, as the solar system was in the middle of passing ...

Using a NASA supercomputer to run models, researchers led by SwRI astronomer David Nesvorny now believe that the Inner Oort cloud looks like a spiral disk, around 0.24 light-years across, with two ...

This video is a part of a series looking at the Outer Solar System. The Oort Cloud is believed to be a vast cosmic shell at the edge of our Solar System that astronomers have never directly seen. The ...

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...

At the edge of our solar system, a host of large, icy bodies make up the Oort cloud, which appears to sport two spiral arms reminiscent of a disk-shaped galaxy. New research founded upon a simulation ...

Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

Previous research has suggested that the Oort cloud contains remnants of the solar system's planets, which were formed over 4 billion years ago, but its exact shape and structure have been a mystery.

Here's how to spot it and why it happens. The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations ...

Venus, the solar system's shiniest planet, reflects 75% of the sunlight. Scientists believe the planet's mirror-like quality is due to the composition of its atmosphere. The metallic clouds that ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.