UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of ...

That would mean the solid centre of the core is just under a fifth of the radius of Mars itself, which is a size ratio similar to that of Earth and its solid inner core. “I think they have a ...

The closest of the asteroids to us—estimated to be about the size of a car—is whizzing through space at 27,358 miles per hour ...

from Earth's perspective, another object (like the Moon, or another planet) perfectly aligns with Mars and obscures the red planet due to its larger apparent size in the sky. "If you can see only ...