Articles on Stars

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Black holes have a gravitational pull so strong that no objects close to them can escape. Victor de Schwanberg/Science Photo Library via Getty Images

Do you need to worry about the Sun turning into a black hole?

Some stars turn into black holes at the end of their lifespans, once they stop burning the fuel in their cores.
The active galaxy Centaurus A, with jets emanating from the central black hole. ESO/WFI (Optical); MPIfR/ESO/APEX/A.Weiss et al. (Submillimetre); NASA/CXC/CfA/R.Kraft et al. (X-ray)

Can you make a black hole in a laboratory?

An astronomer explains why artificial black holes are pure science fiction – at least for now.
This artist’s impression shows two tiny but very dense neutron stars at the point at which they merge and explode. ESO/L. Calçada/M. Kornmesser

Astrophysicists trace the origin of valuable metals in space, from colliding stars to merging galaxies

Gold and platinum are found in space, created when two stars collide. Astrophysicists can even trace this process further back, to the merger of galaxies.

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