YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may ...

For a long time, scientists thought the Earth's inner core was a solid ball of metal, sort of like a planet within a planet that sits some 3,000 miles (4,828 kilometers) below the surface.

Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

The solar system moved through a star-forming area near Orion. This event might have increased interstellar dust around Earth ...

A major highlight of the mission will take place on March 14, when Blue Ghost captures high-definition images of a total ...