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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Fishing for votes with Nigel Farage: The Ukip leader shows how he can work an audience as he casts his line to the disaffected of Grimsby

Fishing is on Nigel Farage's mind

Ukip leader casts a line to the disaffected
Who is bombing whom in the Middle East? It's amazing they don't all hit each other

Who is bombing whom in the Middle East?

Robert Fisk untangles the countries and factions
China's influence on fashion: At the top of the game both creatively and commercially

China's influence on fashion

At the top of the game both creatively and commercially
Lord O’Donnell: Former cabinet secretary on the election and life away from the levers of power

The man known as GOD has a reputation for getting the job done

Lord O'Donnell's three principles of rule
Rainbow shades: It's all bright on the night

Rainbow shades

It's all bright on the night
'It was first time I had ever tasted chocolate. I kept a piece, and when Amsterdam was liberated, I gave it to the first Allied soldier I saw'

Bread from heaven

Dutch survivors thank RAF for World War II drop that saved millions
Britain will be 'run for the wealthy and powerful' if Tories retain power - Labour

How 'the Axe' helped Labour

UK will be 'run for the wealthy and powerful' if Tories retain power
Rare and exclusive video shows the horrific price paid by activists for challenging the rule of jihadist extremists in Syria

The price to be paid for challenging the rule of extremists

A revolution now 'consuming its own children'
Welcome to the world of Megagames

Welcome to the world of Megagames

300 players take part in Watch the Skies! board game in London
'Nymphomaniac' actress reveals what it was really like to star in one of the most explicit films ever

Charlotte Gainsbourg on 'Nymphomaniac'

Starring in one of the most explicit films ever
Robert Fisk in Abu Dhabi: The Emirates' out-of-sight migrant workers helping to build the dream projects of its rulers

Robert Fisk in Abu Dhabi

The Emirates' out-of-sight migrant workers helping to build the dream projects of its rulers
Vince Cable interview: Charging fees for employment tribunals was 'a very bad move'

Vince Cable exclusive interview

Charging fees for employment tribunals was 'a very bad move'
Iwan Rheon interview: Game of Thrones star returns to his Welsh roots to record debut album

Iwan Rheon is returning to his Welsh roots

Rheon is best known for his role as the Bastard of Bolton. It's gruelling playing a sadistic torturer, he tells Craig McLean, but it hasn't stopped him recording an album of Welsh psychedelia
Morne Hardenberg interview: Cameraman for BBC's upcoming show Shark on filming the ocean's most dangerous predator

It's time for my close-up

Meet the man who films great whites for a living
Increasing numbers of homeless people in America keep their mobile phones on the streets

Homeless people keep mobile phones

A homeless person with a smartphone is a common sight in the US. And that's creating a network where the 'hobo' community can share information - and fight stigma - like never before