Planet's

Maybe this world is another planet's Hell.

This planet's orbit is congested with hundreds of captured moons.

Halting the decline of the planet's ecosystems may be the most difficult challenge humanity has ever faced.

The richest 85 people in the world are as wealthy as the poorest half of the planet's population.

The surface of Mercury has been shaped by three processes: impact cratering where large objects struck the surface resulting in crater formation, volcanism where lava flooded the surface, and tectonic activity where the planet's crust moved in order to adjust to the planetary cooling and contracting.

From data gathered by the Viking 1 and 2 probes, we know that the Martian surface is covered by various rocks and a soil which is rich in an iron-laden clay. The presence of iron explains the planet's reddish-orange appearance.

Haumea is believed to be shaped like a plump cigar. The dwarf planet's rapid spin is thought to be the cause of this unusual shape.

The Voyager 2 mission provided more information about Uranus and its moons than had been gathered since the planet's discovery.

By mapping Jupiter's gravitational and magnetic fields, Juno will reveal the planet's interior structure and measure the mass of the core.

For most of the past 10,000 years, global average temperature has remained relatively stable and low compared to earlier hothouse conditions in our planet's history.