Speed Of Light
MAXI J1820+070: Black hole outburst caught on video  PHYS.ORG · 2 days
Astronomers have caught a black hole hurling hot material into space at close to the speed of light. This flare-up was captured in a new movie from NASA's Chandra X-ray Observatory. more
How will we receive signals from interstellar probes like Starshot?  PHYS.ORG · 4 days
In a few decades, the Breakthrough Starshot initiative hopes to send a sailcraft to the neighboring system of Alpha Centauri. Using a lightsail and a directed-energy laser array,... more
Physicists test titanium target windows for particle beam  PHYS.ORG · 4 days
In the late 2020s, Fermilab will begin sending the world's most intense beam of neutrinos through Earth's crust to detectors in South Dakota for the international Deep Underground Neutrino Experiment, or DUNE.... more
Speeding up long-range coherent LiDAR  PHYS.ORG · 3 weeks
Light detection and ranging (LiDAR) comprises an array of techniques using laser light to measure distances by multiplying the time delay between transmitted and received optical signals with the speed of light. Modern 3-D LiDAR sensors combine high... more
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How will we receive signals from interstellar probes like Starshot?
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