Articles on Event horizon

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Dr. Who used the this time machine, called the TARDIS, to travel through space and time on the BBC television show Dr. Who. Babbel1996 / Wikimedia Commons

Time travel is possible – but only if you have an object with infinite mass

Who wouldn't want to travel in time, glimpsing the dinosaurs or peeking at humans 2,000 years from now? Now physicists have designed a time machine that seems deceptively simple.
“Infinite” is where we get to when we reach the limits of our understanding. truly0utrageous

Black holes might exist, but let’s stay sceptical

Peruse the astrophysical literature and you could be forgiven for thinking black holes exist. But do they really? What makes a black hole special is its event horizon: a no-return gateway to an unknowable…

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