Our Solar System is in motion and cruises at about 200 kilometres per second relative to the center of the Milky Way.

New research suggests that a binary pair of Kuiper Belt objects, known as the Altjira system, is actually made up of three separate bodies orbiting one another in a complex triad. This rare orbital configuration is often referred to as the "three-body problem.

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks," asteroids from the triple star system Alpha Centauri.

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in the Oort Cloud.

A giant wave of undulating gas and dust appears, per new research, to have engulfed our Solar System millions of years ago.

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers discovered that the inner portion of the Oort cloud likely has spiral arms that make it look like a galaxy.

Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.

The stars as seen from Earth would have looked dimmer 14 million years ago, as the solar system was in the middle of passing through clouds of dust and gas

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

The entire solar system, ours at least, sits inside a pocket of low density called the Local Hot Bubble (LHB). This cavity in space is 1,000 light-years across, at least, and tips the thermometer at over 1 million degrees. However, such an empty region, while the atoms are sparse, remain a mystery.

Millions of years ago, our Solar System traveled through a densely populated galactic region and was exposed to increased interstellar dust.

In research highlighted in a new paper, published today in The Astrophysical Journal, Scientia Senior Lecturer Ben Montet and PhD candidate Brendan McKee analysed changes in the timing of a known planet's transit across its star, to infer the presence of a second exoplanet.