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A new algorithm helps drones find the fastest route around obstacles without crashing. The system could enable fast, nimble drones for time-critical operations such as search and rescue.
Hubble's law and faster than light expansion speeds
Hubble's law light expansion speeds four-velocity vector
2011/8/18
Abstract: Naively applying Hubble's law to a sufficiently distant object gives a receding velocity larger than the speed of light. By discussing a very similar situation in special relativity, we argu...
LHC speeds towards collisions（图）
LHC collisions
2009/11/24
CERN has confirmed the first simultaneous acceleration of two separate proton beams around the Large Hadron Collider (LHC). Occurring just after noon today (Central European Time), the result marks an...