'Problematic' Greenland polar bear may be shot

A polar bear in Greenland may be shot dead next time it endangers people after several close encounters, including one where it bit the hand of a documentary team member, authorities said.

On the origin of massive stars

This scene of stellar creation, captured by the NASA/ESA Hubble Space Telescope, sits near the outskirts of the famous Tarantula Nebula. This cloud of gas and dust, as well as the many young and massive stars surrounding ...

Beyond Jupiter, researchers discover a 'cradle of comets'

Comets are known to have a temper. As they swoop in from the outer edges of our solar system, these icy bodies begin spewing gas and dust as they venture closer to the sun. Their luminous outbursts can result in spectacular ...

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