We are passengers on an extraordinary "spaceship Earth," a planet that recycles its chemical building blocks through dynamic geochemical cycles, using matter originally forged in ancient stars.

It’s typically composed of around 70 percent or more non-crystallized silica, along with a bunch of different trace elements. It appears as a dark glassy rock that’s typically black, although ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s ... to calculate the distance to variable stars from Earth. Hubble had already used this knowledge in ...

A Bronze Age treasure hoard, unearthed in Spain over 60 years ago, has now been confirmed to contain iron forged from a meteorite ... iron that fell to Earth a million years ago.

We are passengers on an extraordinary “spaceship Earth”, a planet that recycles its chemical building blocks through dynamic geochemical cycles, using matter originally forged in ancient stars. These ...