Ever since the invention of the telescope, humans have looked to the planet Saturn in awe of its magnificent system of rings.

The ring, if it existed, may have cooled the Earth, causing a deep freeze and altering the future of life on this planet, ...

Simple, single-celled algae would have made enough oxygen via photosynthesis to sustain trilobites, clamlike brachiopods, worms, and other life-forms that came into existence ... likely contributed to ...

The ring might have acted like a giant sunshade, causing a cooling effect that might have unleashed an ice age.

A ring of asteroid debris could have orbited Earth for tens of millions of years, and perhaps even have altered the planet's ...

The Lachlan Fold Belt forms the eastern part of the Macquarie ... The major deposits, found within Ordovician volcanic rocks, are linked to porphyry intrusives and are typical of the region ...

This was the Ordovician-Silurian extinction ... And now, there’s a new threat to human existence and many other forms of life here on Earth. Climate change. Temperatures and sea levels are rising ...

In this country, in Devonshire and Cornwall, the occurrence of radiolarian cherts, both of Ordovician and Carboniferous ... distribution of these lowly forms of life. that they may prove of ...

Let’s start with a clear definition of what constitutes a mass extinction. Unlike regular extinctions, which occur at a steady background rate — about 10% of species lost every million years — mass ...

This era of intense bombardment, known as the Ordovician impact spike ... its Roche limit is one of the most common ways rings form, with this being the way that Saturn's rings are thought ...

Earth may have sported a Saturn-like ring system 466 million years ago, after it captured and wrecked a passing asteroid, a new study suggests. The debris ring, which likely lasted tens of millions of ...