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 ...

Emission nebulae are glowing, spread-out clouds of ionized gas that shine with their own light. In this image of NGC 2313, the bright star V565 at the center lights up a silvery curtain of gas and ...

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

For over forty years, astronomers have been baffled by X-rays from the white dwarf at the center of the Helix Nebula. A white ...

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...

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

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

A new view of the Helix Nebula reveals a dying white dwarf star at the nebula's center. This star's violent eating habits ...

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

This image of the Helix Nebula, released on March 4, 2025, shows a potentially destructive white dwarf at the nebula's center ...

In about 5 billion years, our Sun will run out of fuel and expand, possibly engulfing Earth. These end stages of a star's life can be utterly ...