All good things must come to an end, and that is even true for planets. Recent research has uncovered what appears to be the grizzly death of an exoplanet in the nearby Helix Nebula, which seems ...
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 ...
A decades-old astronomical mystery has finally been solved—an enigmatic X-ray signal emanating from deep space turns out to ...
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.