Say goodbye to summer! Autumn officially begins TONIGHT as the sun shines directly above the equator - making day and night equal in length

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• Brits are being told to put a bowl of SALT on their windowsills this autumn - but does it really work?

• Saturn's moon could harbour ALIEN life: Scientists discover new complex organic molecules spewing from Enceladus - suggesting it could be habitable

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• NASA whistleblowers claim astronauts could die in horrific space tragedy: 'No one is coming to save us'

• Word War III fears loom as Trump ramps up production of devastating missiles

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• Imelda erupts into hurricane near East Coast as Fujiwhara Effect to save millions from devastation

• Do you see blue or purple? Mind-boggling optical illusion divides the internet - as viewers struggle to agree on the colour of simple dots