Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.

The Helix Nebula is an eye-catching sight in the sky – and not just because it looks like a giant eye. Located about 655 light-years from Earth, it’s the site of a slow-motion explosion ...

In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads ... and eerie resemblance to a giant eye. In this false-color image, NASA's Hubble ...

"We might have finally found the cause of a mystery that’s lasted over 40 years." Using NASA's Chandra observatory and Europe's XMM-Newton spacecraft, astronomers may have solved a 45-year-old ...

This color-composite image of the Helix Nebula was created from images obtained using the the Wide Field Imager, an astronomical camera attached to the 2.2 meter Max-Planck Society/ESO telescope ...