Milky Way Habitable Zone

  • Released Thursday, May 28, 2026
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This infographic features artist's concept views of our Milky Way galaxy: face-on at the left and edge-on at the right. It highlights different galactic environments that could influence the development of planets and potentially life. The center of the galaxy is rich in the elements that form planets (like silicon, oxygen, and magnesium), which are forged by multiple generations of stars and supernova explosions. Planets there may be more common or larger, but they would also be flooded with radiation from densely packed stars (including massive ones that emit enormous amounts of high-energy ultraviolet light and X-rays). In the outskirts of the galaxy, where stars are much more spread out, radiation is far milder but there are also smaller amounts of planet-building materials. Nestled in between these regions is the galactic habitable zone, a happy medium where radiation levels and planet-forming elements balance out, increasing the likelihood of worlds that could support life.

This infographic features artist's concept views of our Milky Way galaxy: face-on at the left and edge-on at the right. It highlights different galactic environments that could influence the development of planets and potentially life. The center of the galaxy is rich in the elements that form planets (like silicon, oxygen, and magnesium), which are forged by multiple generations of stars and supernova explosions. Planets there may be more common or larger, but they would also be flooded with radiation from densely packed stars (including massive ones that emit enormous amounts of high-energy ultraviolet light and X-rays). In the outskirts of the galaxy, where stars are much more spread out, radiation is far milder but there are also smaller amounts of planet-building materials. Nestled in between these regions is the galactic habitable zone, a happy medium where radiation levels and planet-forming elements balance out, increasing the likelihood of worlds that could support life.

Same as above with no labels.

Same as above with no labels.

For More Information

See https://www.nasa.gov/missions/roman-space-telescope/nasas-roman-mission-preps-to-unveil-new-populations-of-faraway-worlds/

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NASA's Goddard Space Flight Center. However, individual items should be credited as indicated above.

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This page was originally published on Thursday, May 28, 2026.
This page was last updated on Thursday, May 28, 2026 at 11:11 AM EDT.