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Matter & Energy

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colliding black holes

BLACK HOLE BOUNTY  Gravitational waves have been spotted from two merging black holes (illustrated above), the fifth reported detection.

Millennium Bridge

SWINGING BRIDGE  When it first opened, crowds on the Millennium Bridge in London (shown) caused the bridge to sway wildly. Scientists have made improved simulations to determine the conditions that lead to such wobbly bridges.

IBM's quantum computer

CHOMPING AT THE QUBIT  IBM announced two new advances to its quantum computing hardware (cooling system and other infrastructure shown): a 20-qubit processor that will be available commercially and a 50-qubit prototype currently undergoing testing.

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