Where is the closest black hole to Earth, and should we worry about it?

спрашиваетStephen Eastwood · 2 ответа

Astronomers like to measure distances by the amount of time it takes light to travel such distances. For example, the nearest star to our Sun – Proxima Centauri – is about 4 light years... Читать далее

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Professor Marika Taylor7 лет83

Professor of Theoretical Physics, University of Southampton. @taylor_marika

If everything in the universe froze (stopped moving) what would happen to time?

спрашиваетSteve Turnbull · 1 ответ

Nothing. Time still passes even if objects stop moving. So, even if the Universe stopped expanding and the planets stopped rotating, time would still go on. Similarly, whether you’re... Читать далее