5 space discoveries that scientists are struggling to explain - Livescience.com
Could an invisible planet lurk at the edge of our solar system
? Can black holes ricochet through space like intergalactic billiard balls? Did our own galaxy's black hole "wake up" with a bang milli… [+7061 chars]
? Can black holes ricochet through space like intergalactic billiard balls? Did our own galaxy's black hole "wake up" with a bang milli… [+7061 chars]
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