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This amazing quartet of galaxies is a result of a collaboration...

This amazing quartet of galaxies is a result of a collaboration between professional and amateur astronomers.

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Photography

Mountains on Saturn’s moon Iapetus may have come from...

Mountains on Saturn’s moon Iapetus may have come from space. New analysis suggests that the mysterious ridge around Iapetus’ equator may be built from celestial debris that once orbited the moon as rings. 6 more words

Photography

A unique pair of supermassive black holes in an ordinary galaxy...

A unique pair of supermassive black holes in an ordinary galaxy have been discovered by an international research team.

The supermassive black holes were spotted when they ripped apart a star while ESA’s space observatory XMM-Newton happened to be looking in their direction. 14 more words

Photography

A cross-section of the universe

An image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. 531 more words

Space

Astronauts aboard the International Space Station on Monday...

Astronauts aboard the International Space Station on Monday opened the hatch on the SpaceX Dragon cargo ship that arrived Sunday and began unpacking more than two tons of supplies. 8 more words

Universe