Eclipses make the sun's gravitational light bending visible

During night-like conditions created during the totality of a solar eclipse, like that of April 8, planets and stars are visible. Venus and Jupiter, bracketing the sun, will be very noticeable, while Mercury will be rather ...

Astrophysical jet caught in a 'speed trap'

The science fiction author Arthur C. Clarke selected his own seven wonders of the world in a BBC television series in 1997. The only astronomical object he included was SS 433. It had attracted attention already in the late ...

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