For the 1st time, scientists confirm the moon has a solid iron ‘heart’ just like Earth
Astronomers have puzzled over the moon's structure since well before any probes landed there
Strange new theory of what caused “world’s biggest impact” over Siberia 100 years ago
Researchers have suggested that nothing actually hit the ground at all...
On faraway planet, it’s cloudy with a chance of liquid iron rain…
This ferocious heat vaporizes metals present in the planet