For the first time, astronomers have mapped the atmosphere of an exoplanet in three dimensions, revealing extreme winds and unexpected chemical patterns. This discovery opens a new window ...

With an orbit of 647 days, HD 20794 d is similar to Mars in our solar system. However, its orbit around the star is highly ...

A new study of decades worth of seismogram data shows that the surface of Earth’s iron and nickel core is more malleable than ...

Scientists found that the inner core’s structure changes as it rotates. It deforms at its border, potentially accumulating more material in some areas and less in others — almost like creating hills ...

The findings reveal details about conditions on Mars when the planet last contained large volumes of liquid water more than 3 billion years ago. “Early Mars has historically been thought of as ...

Our planet orbits 93 million miles (150,000 km) away from the sun. This puts Earth in a so-called "Goldilocks zone," where the temperature is just right for liquid water to exist on the surface.