Where does helium come from?

Isn’t it amazing that astronomy – humanity’s oldest science – continues to generate such a delightful amount of new knowledge? Seeing as we’ve been studying the motion of the stars for a good long whi

What the scientists are saying… The oldest ...

Of the hundreds of thousands of asteroids in our solar system, it is all too feasible that one could strike Earth. If scientists discover this is likely to happen, what are our options for defending ourselves – and who will make the key decisions? Tomas Weber reports

20 amazing answers t o curious

It’s one of the most basic concepts in physics, governing the behaviour of everything from subatomic particles to galaxies

PLANET EARTH