Image: Hubble captures a galactic menagerie

The NASA/ESA Hubble Space Telescope captured this massive galaxy cluster, called Abell 1351, with its Wide Field Camera 3 and Advanced Camera for Surveys. Abell 1351 lies in the constellation Ursa Major in the northern hemisphere.

Invasive wasp tests nature's strengths and weaknesses

A wasp that has already caused major damage in the Southern Hemisphere could spread throughout North America, although nature's defenses are currently keeping the insect under control, according to a Dartmouth study.

Air pollution may increase freezing rain in northern hemisphere

Freezing rain is a typical weather disaster in winter and early spring over many regions of the world, even tropical areas. It develops as supercooled water (below 0 °C) in the air and freezes immediately after depositing ...

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