The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

When a mudflat crumbles on Earth, or an ice sheet splinters on one of Jupiter's moons (Europa), or an ancient lakebed breaks ...

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

A rare grouping of 10 celestial bodies is captured in a stunning new photo taken during last weekend’s great planetary parade ...

The two continent-sized provinces have been known since the 1970s, but it’s only in the last few years we’ve started to ...

Earth emerged from the last ice age around 11,700 years ago. A new analysis suggests the next one could be expected in 10,000 ...