The exoplanet HD 20794d swoops in and out of its habitable zone every few hundred days, making for an extreme climate.

And it's a fact – the sun does circle you in the south ... trickster who takes part in the supposed cover-up that the Earth is round. 'I realise that I'll be called a shill for just saying ...

So the Sun's rays can't reach places in the far north, the Arctic Circle. In these places ... in midwinter darkness again. We know the Earth is round, like a ball. But only 50 years ago, such ...