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Even though it sounds totally crazy, astronomers are very confident that black holes exist. Our galazy is really old, it should carry at least 100 million black holes but we’ve found only a couple of dozen of them.
As if our regular universe isn’t crazy enough – there might be a completely different ‘mirror’ universe lurking amongst us!
Being stuck in one spot, waiting for the full moon to pass and the perfect temperature to arrive, and your choice of mate left to the tide: when you’re coral, reproduction is mind-boggling complicated, as Dr Karl Kruszelnicki explains
For some snapping spaghetti is sacrilege — but for others it’s science.