Europe
Asia
Oceania
Americas
Africa
Gravitational lensing, demonstrated
Speak your mind
Might our universe – as vast as it is – be simply one of many? We look at the growing evidence that there’s more than one cosmos out there
GLOBAL EYE
While our planet only has one easily visible Moon, several other tiny objects arguably deserve the title too
This phenomenon turns seas and other large bodies of water into a mirror-like surface