Keep your eye on the ball” is a motto for many athletes—and for astronomers trying to find Earth-threatening space rocks ...

On 27 December last year, astronomers using the ATLAS survey telescope in Chile discovered a small asteroid moving away from ...

We know that Earth is ... into a glowing red ball of molten rock. However, this speck of zircon suggested that this fiery hellhole didn’t last for too long. If zircon was around 4.4 billion ...

It includes all of space ... as asteroids and comets in orbit around it. Planet: a planet is smaller than a star and is either a small ball of rock e.g., the Earth or a large ball of gas e.g ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...