the universe
Now imagine a white hole – a black hole’s time-reversed twin…
Just as you can enter a black hole without leaving it, you can exit a white hole without entering it – but first you must understand what black holes really are
Cosmic cataclysm
Alexander Masters speculates on how the universe will end
In the sky with diamonds
The beliefs of physicists are infinitely kookier than anything in the Bible, says Alexander Masters
The strangest objects we know of
The idea of black holes sounds so quintessentially modern and 20th-century that it may come as a surprise to learn…