Geological evidence, including an Ordovician-era increase in earthquakes, tsunamis, meteorites, and crater formation, suggests a significant celestial event approximately 466 million years ago. A ...

![Earths Rings from Griffith Observatory Kevin Gill Wikimedia](https://images.twnmm.com/c55i45ef3o2a/thZgLtn2qnQphDRru9Ai2/569e470e9056bd2d6ddf7ab85a8baac4/Earths ...

In a recent study published in Earth and Planetary Science Letters, researchers suggest that Earth once had a giant, ...