Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Einstein explained that gravity affects each passing second. Clocks slow down where gravity grows stronger. Clocks speed up ...

Scientists mapped ancient Martian rivers and drainage basins, revealing past water flows and habitable environments of Mars’s climate and geological history.

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

A planet of diamonds sounds like a fairy tale but 55 Cancri e is no fantasy. Located 40 lightyears from Earth, this super-Earth formed under such brutal heat and pressure that its carbon-rich interior ...

Scientists have finally confirmed a powerful coronal mass ejection from another star, using LOFAR radio data paired with ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

About 4.5 billion years ago, Earth had a violent neighbor. A young, still-forming planet named Theia slammed into our world with enough force to melt vast portions of its mantle and scatter a huge ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.