One of the most powerful objects in the universe is a radio quasar — a spinning black hole spraying out highly energetic particles. Come too close to one, and you'd get sucked in by its gravitational ...

Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

Scientists have proposed that advanced alien civilizations could build a Dyson sphere around a black hole instead of a star.

Remember when I warned everyone that humans would probably destroy all life in the universe like construction workers killing ant colonies to make way for a never-ending series of cosmic strip malls?

Some spectacular-looking holes seen in the sky above Alabama Monday night had some people wondering if, perhaps, they were witnessing the start of an alien invasion. No - at least not yet. While ...

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