
About time: Why does time's arrow fly only one way?
5 October 2011
We can move through space in any direction we like – but time is a strictly one-way street, and physicists still can't tell us why

5 October 2011
We can move through space in any direction we like – but time is a strictly one-way street, and physicists still can't tell us why

5 October 2011
General relativity and quantum mechanics explain time in drastically different ways – reconciling them is the key to a theory that will encompass both

10 December 2008
What if our universe didn't emerge from nothing, but is a recycled version of one that went before? Anil Ananthaswamy investigates

19 November 2008
If you want to understand the universe be prepared to get your moments in a muddle, advises Michael Brooks

16 January 2008
The greatest trick the universe ever pulled was convincing us that time exists. Amanda Gefter breaks the spell

9 August 2006
Physical particles may seem very different from the space-time they inhabit, but what if the two are one and the same thing? 91av investigates

8 October 2004
We may never know what kicked the universe into being, but there are certainly some ingenious suggestions out there

20 March 2004
Was the big bang the start of everything? Far from it, reports Amanda Gefter, it may merely have been a portal from a looking-glass universe

26 April 2002
You're holding a magazine. It feels solid; it seems to have some kind of independent existence in space. Ditto the objects around you—perhaps a cup of coffee, a computer. They all seem real and out there somewhere. But it's all an illusion. Those su

16 May 1997