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Hubble Surveys Supernova-Rich Spiral A top-down view of a spiral galaxy, showing its brightly-shining center, its broad spiral arms, and the faint halo around its disk, as well as distant galaxies and stars on a dark background. Large blue clouds of gas speckled with small stars and strands of dark dust swirl around the galaxy’s disk. A couple of the background galaxies are large enough that their own swirling spiral arms are visible. This NASA/ESA Hubble Space Telescope image features the face-on spiral galaxy NGC 1309. ESA/Hubble & NASA, L. Galbany, S. Jha, K. Noll, A. Riess Rich with detail, the spiral galaxy NGC 1309 shines in this NASA/ESA Hubble Space Telescope image. NGC 1309 is about 100 million light-years away in the constellation Eridanus.

This stunning Hubble image encompasses NGC 1309’s bluish stars, dark brown gas clouds, and pearly-white core, as well as hundreds of distant background galaxies. Nearly every smudge, streak, and blob of light in this image is an individual galaxy, some shining through less dense regions of NGC 1309 itself. The only exception to this extragalactic ensemble is a star near the top of the frame identified by its diffraction spikes. The star is positively neighborly at just a few thousand light-years away in the Milky Way galaxy.

Hubble turned its attention toward NGC 1309 several times; previous Hubble images of this galaxy were released in 2006 and 2014. Much of NGC 1309’s scientific interest derives from two supernovae, SN 2002fk in 2002 and SN 2012Z in 2012. SN 2002fk was a perfect example of a Type Ia supernova, which happens when the stripped-down core of a dead star (a white dwarf) explodes.

SN 2012Z, on the other hand, was a bit of a renegade. It was classified as a Type Iax supernova: while its spectrum resembled that of a Type Ia supernova, the explosion wasn’t as bright as expected. Hubble observations showed that in this case, the supernova did not destroy the white dwarf completely, leaving behind a ‘zombie star’ that shone even brighter than it did before the explosion. Hubble observations of NGC 1309 taken across several years also made this the first time astronomers spotted a star system that later produced an unusual supernova explosion of a white dwarf.

Text Credit: ESA/Hubble

Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contact:

Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight CenterGreenbelt, MD

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Details Last Updated Jul 31, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Hubble Space Telescope Spiral Galaxies The Universe

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