Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin, with liquid water on its surface—and maybe even life. Now, the world is a cold ...

Our planet's closest and brightest neighbor will pass approximately between the Earth and sun this week, in what's called an inferior conjunction.

Credit: Maxar Technologies For years, researchers have built AI-powered models to simulate virtual scenarios of the planet. The concept, known as Earth’s “digital twin,” leverages a wealth ...

The Bay Sages heard from the Delta Astronomical Society (DAS) during its monthly meeting on Thursday. DAS Newsletter Editor ...

Through comparative planetology, we see the Earth in a wider context. We can understand which aspects of the evolution of our own planet seem inevitable through this study and which are due to chance.