Astronomers have detected what they say is the biggest explosion in the universe – the largest since the Big Bang.

Researchers say the blast took place 390 million light years away in a supermassive black hole, leaving a ‘crater’ the size of 15 Milky Ways.

So how big was this explosion? Scientist Melanie Johnston-Hollitt compared it to a 20 billion-billion megaton TNT explosion going off every thousandth of a second – for 240 million years. In other words, “Huge”.

What do you think caused this massive explosion? Do you think astronomers will ever discover alien life?

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