A NASA scientist is warning that Earth currently has no reliable way to stop thousands of so-called “city-killing” asteroids that could one day strike the pla ...

Researchers have identified a period of sluggish magnetic field flipping for planet Earth, some 40 million years ago – raising big questions about how long these reversals actually take, and how we ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

Six planets will form a cosmic lineup Feb. 28 — here’s why the rare sight may be harder to spot than you think.

She’s worried about the a-rock-alypse. A planetary defense expert is warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

NASA says Earth is about halfway through its lifespan. Scientists explain how solar changes could affect habitability, oceans, and the planet’s future over billions of years ...

A distant planet’s final spiral into its star reframed Earth’s fate: not one sudden end, but long quiet thresholds over deep time.

The Earth is apparently halfway through its lifecycle, and this was revealed using an unlikely neighbour in space – and it ...

Scientists suggest that huge reserves of hydrogen inside the Earth may have been key in the formation of water.