Hubble Captures Rare, Violent Death Throes of a Star Inside the Calabash Nebula

New image offers unprecedented look at how Sun-like stars eject their outer layers in their final centuries

NASA’s Hubble Space Telescope has unveiled a spectacular new portrait of the Calabash Nebula, capturing the explosive final moments of a dying star with extraordinary clarity. The image reveals twisting clouds of gas, shockwaves and high-velocity jets streaming into space—features that give astronomers a rare, close-up view of one of the most dramatic phases in stellar evolution.

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A Turbulent Nebula Shaped Like a Cosmic Gourd

The Calabash Nebula, often nicknamed the “Rotten Egg Nebula” because of its sulfur-rich chemistry, sits about 5,000 light-years away in the constellation Puppis. In Hubble’s latest image, the nebula’s distorted, gourd-like shape is unmistakable: two bright lobes stretch outward from a compact central region, sculpted by violent eruptions from the dying star at its heart.

Astronomers classify the Calabash as a proto-planetary nebula, a fleeting stage that lasts only a few thousand years. This makes high-resolution observations especially valuable. As the central star sheds its outer layers, it sends gas racing outward at speeds exceeding half a million kilometers per hour, creating the elongated, lopsided structure seen today.

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High-Speed Gas Streams and Expanding Shockwaves

Hubble’s newly processed data highlights intricate shock fronts—regions where fast-moving material crashes into slower-moving clouds, generating rippling arcs of glowing gas. These collisions illuminate the nebula’s structure and help scientists track how material is redistributed into space.

The jets emerging from the dying star are so fast that astronomers estimate they were launched only a few hundred years ago—essentially minutes on cosmic timescales. As these jets plow into older shells of gas, they carve out the bright, asymmetric lobes that define the nebula.

This process offers a preview of the distant future of our own Sun, which will enter a similar phase in about 5 billion years.

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Why These Observations Matter

Understanding objects like the Calabash Nebula helps researchers refine models of how Sun-like stars die and how they enrich the galaxy with heavier elements. When a star sheds its layers, it seeds future generations of stars and planets with carbon, oxygen, nitrogen and other life-forming materials.

NASA scientists say Hubble’s detailed imagery fills in a crucial gap between the red-giant phase of a star and the formation of a fully developed planetary nebula. It also demonstrates how chaotic and asymmetrical stellar death can be—far from the uniform, spherical shells once imagined.