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Black hole jet appears to boost rate of nova explosions

Enlarge / One of the jets emitted by galaxy M87’s central black hole. (credit: NASA and the Hubble Heritage Team (STScI/AURA)) The intense electromagnetic environment near a black hole can accelerate particles to a large fraction of the speed of…

AI bots now beat 100% of those traffic-image CAPTCHAs

Enlarge / Examples of the kind of CAPTCHAs that image-recognition bots can now get past 100 percent of the time. (credit: Arxiv, Plesner et al.) Anyone who has been surfing the web for a while is probably used to clicking…