Space

It’s been a big puzzle for more than two decades – if something emits X-rays, it’s going to be very hot. But comets? They’re balls of ice and rock, yet still emit X-rays. It’s been a tricky one, but researchers think they have finally figured out why.   The discovery that comets emit X-rays is relatively…
March 16, 2018
According to a straightforward interpretation of general relativity, the Big Bang wasn’t the start of ‘everything’. Taking Einstein’s famous equations at face value and making as few assumptions as possible, a team of researchers has rewound the clock on our Universe to find it wouldn’t lead to a stopping point at all, but would take…
March 15, 2018