The formation of Mercury remains an unsolved mystery. The planet closest to the sun has a disproportionately large metallic core—accounting for about 70% of its mass—and a relatively small rocky ...
Morning Overview on MSN
A cosmic collision just exposed how black holes really behave
When two black holes slam together, they do not simply vanish into darkness, they ring like struck bells and briefly light up ...
A suspended apparatus used to minimize friction during the experiment. The heavier brass cylinder and lighter ping-pong ball collide repeatedly against the transparent wall, reproducing 31 collisions ...
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