Scientists have been receiving X-ray signals from the Helix Nebula for decades, but now they believe it may hide a horrifying and grisly secret.

A new image released by NASA shows what could be a captivating — and terrifying — event roughly 650 light-years away: a dying ...

The Helix Nebula, also known as Caldwell 63, is located 650 million light-years from Earth. It is the glowing remains of a ...

行星状星云是相对较轻的恒星（质量小于太阳的8倍），不会发生超新星爆炸，在恒星生命结束时形成的天体。像太阳这样的恒星在晚年会从主序星演化成红巨星，并从外层向周围释放气体和尘埃。不久，失去气体的恒星将进入从红巨星向白矮星转变的阶段（中心恒星），释放出的气 ...

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.

This colorful image of the Helix nebula may mirror what someday could become of our sun and our home planet. Released on ...

A 40-year-old space enigma has been unraveled: a white dwarf star at the center of the Helix Nebula has been annihilating a ...

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 ...

NGC 7293, better known as the Helix nebula, displays its ultraviolet glow courtesy of NASA's Galaxy Evolution Explorer (GALEX ...

NASA’s Spitzer Space Telescope captured a stunning image of the Helix Nebula, also known as NGC 7293. This image captures the star-forming region NGC 3324, seen in infrared light. This stunning image ...

Since the 1980s, a strange X-ray emission has puzzled astronomers. At the heart of the Helix Nebula, a dying star may have destroyed a neighboring planet, revealing a rare and spectacular phenomenon.