Variable Speed Limits Are Popping Up Across America – Here's How The System Works

A variable speed limit system changes the max speed limit throughout the day. Instead of a static limit, it's based on road ...
SpaceNews

NASA Study Helps Explain Limit-Breaking Ultra-Luminous X-Ray Sources

These objects are more than 100 times brighter than they should be. Observations by the agency’s NuSTAR X-ray telescope support a possible solution to this puzzle. Exotic cosmic objects known as ultra ...
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Highways explain speed limits on the M27

National Highways has explained two speed limits on the M27 that have puzzled drivers. The 40mph restriction on the M27 eastbound over the Hamble Bridge have been attributed due to damage. A National ...
SpaceRef

NASA Study Helps Explain Limit-Breaking Ultra-Luminous X-Ray Sources

In this illustration of an ultra-luminous X-ray source, two rivers of hot gas are pulled onto the surface of a neutron star. Strong magnetic fields, shown in green, may change the interaction of ...