Although it’s by no means certain, scientists are slowly accumulating evidence that life once existed on the Red Planet

Amazing answers to your curious questions

Astronomers are now regularly detecting planets thousands of light years from Earth – but have we missed one in our own Solar System?

Projecting our consciousness into other bodies and walking on alien worlds might not be such a far-flung concept

Measuring time using the Earth’s rotation was always an imprecise business, so now we do it using the ‘tick’ of an atom

Using Webb, researchers detected several complex carbon-based molecules ...