Astronomers have long sought a cosmic explanation for the Bible’s Star of Bethlehem, the shining celestial object that, so the story goes, guided the wise men, or magi, from Jerusalem to greet the ...

Scientists tracking the health of the planet now say humanity has pushed Earth beyond seven of the nine environmental limits that kept conditions stable for thousands of years. The warning is not ...

An artist's impression of the collision between the early Earth and Theia, which may have formed the moon MPS / Mark A. Garlick Around 4.5 billion years ago, a planet called Theia is thought to have ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

The appearance of oxygen in Earth's atmosphere was a turning point in the history of our planet, forever transforming the environment and setting the stage for complex life. This event, known as the ...

Alfred McEwen’s HiRISE camera has brought the dynamic features of Mars into sharp focus over the past nine years. Now he plans to give Jupiter’s moon Europa its first closeup. McEwen, of the ...

Viruses typically aren’t considered ‘alive,’ as many core biological functions are outsourced to their potential hosts. But a newly discovered organism appears to straddle the line between virus and ...