We know that the general theory of relativity is compatible with the existence of space-times in which travel to the past or remote future is possible.

NEWYORKER: The Region of Unlikeness

Linden Lab was founded in 1999 and its most high-profile creation is Second Life - in which people create and adorn avatars and that live out a parallel existence in the online space.

BBC: NEWS | Technology | Second Life creator changes role

As a result, they were doing all of their socialising online - and even here their "space" was being regulated out of existence, she argued.

BBC: Vetting rule ridiculous - Byron

Meanwhile, the existence of the shuttle doubtless inhibits the development of a private space industry and the new private companies face regulatory restrictions that do not apply to the shuttle.

ECONOMIST: The space shuttle: Old, unsafe and costly | The

They say (she had read somewhere) that no one ever disappears, up in the atmosphere, stratosphere, whatever you call space atoms infinitely minute, beyond conception of existence, are up there forever, from the whole world, from all time.

NEWYORKER: A Beneficiary

But on Friday (12 December), an international group of astronomers claimed analysis of data returned from the European Space Agency's (Esa) XMM-Newton satellite observatory casts doubt on the existence of dark energy.

BBC: NEWS | Science/Nature | Dark energy tops science class

Once upon a time, Apollo allowed us to venture far beyond our terrestrial existence, and the time is rapidly approaching when Orion will take us further into the vastness of space than ever.

ENGADGET: Lockheed Martin shows us how it's getting Orion ready to explore the cosmos