Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by ... X-Ray Flashes from a Nearby Supermassive Black Hole ...

There’s a reason why mushroom vol-au-vents – crisp, golden puff pastry with a creamy filling – will always be popular: they’re delicious! Serve them as a first course or light lunch – or ...

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