This discovery stems from four decades of X-ray observations of the Helix Nebula, located 650 light-years from Earth. The stream of X-ray radiation remained effectively constant over at least 20 ...

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The ...

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 ...

This image of the Helix Nebula, released on March 4, 2025, shows a potentially destructive white dwarf at the nebula's center; this star may have destroyed a planet. This has never been seen ...

At the heart of the Helix Nebula, a dying star may have destroyed a neighboring planet ... The white dwarf is at the center of a planetary nebula illustrated by the blue gas in the background. The ...

In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads caused by excitation of their molecular material from shocks or ultraviolet radiation.