In Dr Who's latest incarnation he will face up to The Kin, who have adopted the persona of the late former Prime Minister and are attempting to rid the world of humans

Doctor Who vs Mrs Thatcher – the showdown: The late leader appears as an evil tyrant in a 50th anniversary story

The year is 1984 and a genocidal Margaret Thatcher wants to replace the human race with time-travelling aliens from another dimension. There is only one person who can help: not Neil Kinnock, not Arthur Scargill, but Doctor Who.

Sun will 'flip upside down' within weeks, says Nasa

The sun’s magnetic field will reverse polarity at some point in the coming weeks, sending ripples to the edge of interstellar space

Is there an afterlife? The science of biocentrism can prove there is, claims Professor Robert Lanza

It’s a question pondered by philosophers, scientists and the devout since the dawn of time: is there an afterlife?

Nasa's spectacular image of Saturn shows 'the day the Earth smiled'

The image above (click for full screen) was taken from within the shadow of Saturn and shows an area  404,880 miles (651,591 kilometers) across.

In his image from the European Space Agency ESA, research satellite GOCE flies above earth

GOCE 'space Ferrari' satellite safely re-enters Earth's atmosphere

The satellite has been in operation since March 2009, with its re-entry planned for by scientists and described as only a "small fraction" of annual pace debris

One-tonne satellite hurtling towards earth - but don't panic just yet

Debris from the European Space Agency spacecraft is most likely to fall harmlessly in oceans

Paperback review: Gravity’s Engines, by Caleb Scharf

I don’t know much about science but I do know what I like, and I like books like this which fill me with a sense of wonder – both at the universe and the human ingenuity which makes sense of it. In lucid, often poetic language, Scharf describes the awesome powers of black holes, those giant collapsed stars whose gravity is so powerful that not even light can escape them, and which gobble up stars as snacks.

Olympic Sochi 2014 Winter Games torch makes history in first spacewalk

Flight engineers Oleg Kotov and Sergey Ryazanskiy left their base at the International Space Station today carrying the torch

Film review: George Clooney and Sandra Bullock are out of this world in Gravity

Dir. Alfonso Cuarón Starring Sandra Bullock, George Clooney, 91mins (12A)

Sandra Bullock in Alfonso Cuaron's Gravity

Film review: Gravity

'Digital imagery has never looked this stunning or hyperrealistic before'

One-tonne satellite will fall back to Earth in an unknown location

The spacecraft has been mapping the Earth's gravity but ran out of fuel a month ago and has been losing altitude ever since

Lady Gaga to perform live in outer space

The US pop star will sing a track at zero gravity for a music festival in 2015

2014 Sochi Olympic torch relay blasts off to space for historic walk

Unlit torch will tour International Space Station before being taken on its first ever trip outside the base

Review: What A Wonderful World, By Marcus Chown

Reading a well-written popular science book is one of the great pleasures of modern times, and this guided tour through life, the universe, and everything affords that pleasure in abundance. Marcus Chown takes us by the hand and leads us through the labyrinthine mysteries of the origins of life, evolution, the cells of the body, the brain-boggling brain, electricity (I’ve never understood what that stuff is; I still don’t, but my ignorance is now better-defined), the crazy truths of quantum theory, gravity, time, stars, and black holes. You can get drunk on the sheer strangeness of the theories – for instance, you have an infinite number of doppelgangers, and the nearest one is 10^10^28 metres away. And we may all be holograms.

Astronaut Scott Carpenter dies ages 88

Fourth man in space has died in Colorado following complications from a stroke

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Migrant crisis: UN official Philippe Douste-Blazy reveals the harrowing sights he encountered among refugees arriving on Lampedusa

‘Can we really just turn away?’

Dead bodies, men drowning, women miscarrying – a senior UN figure on the horrors he has witnessed among migrants arriving on Lampedusa, and urges politicians not to underestimate our caring nature
Nine of Syria and Iraq's 10 world heritage sites are in danger as Isis ravages centuries of history

Nine of Syria and Iraq's 10 world heritage sites are in danger...

... and not just because of Isis vandalism
Girl on a Plane: An exclusive extract of the novelisation inspired by the 1970 Palestinian fighters hijack

Girl on a Plane

An exclusive extract of the novelisation inspired by the 1970 Palestinian fighters hijack
Why Frederick Forsyth's spying days could spell disaster for today's journalists

Why Frederick Forsyth's spying days could spell disaster for today's journalists

The author of 'The Day of the Jackal' has revealed he spied for MI6 while a foreign correspondent
Markus Persson: If being that rich is so bad, why not just give it all away?

That's a bit rich

The billionaire inventor of computer game Minecraft says he is bored, lonely and isolated by his vast wealth. If it’s that bad, says Simon Kelner, why not just give it all away?
Euro 2016: Chris Coleman on course to end half a century of hurt for Wales

Coleman on course to end half a century of hurt for Wales

Wales last qualified for major tournament in 1958 but after several near misses the current crop can book place at Euro 2016 and end all the indifference
Rugby World Cup 2015: The tournament's forgotten XV

Forgotten XV of the rugby World Cup

Now the squads are out, Chris Hewett picks a side of stars who missed the cut
A groundbreaking study of 'Britain's Atlantis' long buried at the bottom of the North Sea could revolutionise how we see our prehistoric past

Britain's Atlantis

Scientific study beneath North Sea could revolutionise how we see the past
The Queen has 'done and said nothing that anybody will remember,' says Starkey

The Queen has 'done and said nothing that anybody will remember'

David Starkey's assessment
Oliver Sacks said his life has been 'an enormous privilege and adventure'

'An enormous privilege and adventure'

Oliver Sacks writing about his life
'Gibraltar is British, and it is going to stay British forever'

'Gibraltar is British, and it is going to stay British forever'

The Rock's Chief Minister hits back at Spanish government's 'lies'
Britain is still addicted to 'dirty coal'

Britain still addicted to 'dirty' coal

Biggest energy suppliers are more dependent on fossil fuel than a decade ago
Orthorexia nervosa: How becoming obsessed with healthy eating can lead to malnutrition

Orthorexia nervosa

How becoming obsessed with healthy eating can lead to malnutrition
Lady Chatterley is not obscene, says TV director

Lady Chatterley’s Lover

Director Jed Mercurio on why DH Lawrence's novel 'is not an obscene story'
Farmers in tropical forests are training ants to kill off bigger pests

Set a pest to catch a pest

Farmers in tropical forests are training ants to kill off bigger pests