Hubble has captured a new, more detailed image of the Trifid Nebula nearly 30 years after its first 1997 observation, highlighting the rust-colored dense region where stars are forming. The upgraded camera installed in 2009 provided greater sensitivity and a wider field of view, revealing structures shaped by massive stars over at least 300,000 years. Located about 5,000 light-years away (Messier 20), the nebula's gas and dust will disperse over millions of years, leaving newly formed stars behind. Hubble (35 years in orbit as of April 2025) continues to work alongside Webb and future missions like the Roman Space Telescope to deepen our view of the cosmos.
Hubble Revisits the Trifid Nebula Nearly 30 Years Later — Stunning New Image and Scientific Insights
The crew of Artemis II captured a breathtaking image of a celestial event known as an "Earthset," in which the Earth dropped below the lunar horizon. The image is reminiscent of the iconic "Earthrise" photo that NASA astronaut Bill Anders captured in 1968 during the Apollo 8 mission that showed our planet rising on the lunar horizon.
NASA's Hubble Space Telescope has returned to a familiar star-forming region nearly three decades after its first detailed observation, producing a sharper, more dramatic image of the Trifid Nebula (Messier 20). The agency released the photograph as part of anniversary observances celebrating the telescope’s long service and its ongoing contributions to astronomy.
A Closer Look at the Trifid
The new image centers on the rust-colored "head and body" of the Trifid Nebula — a dense cloud of gas and dust where new stars are forming. With improved sensitivity and a wider field of view from an upgraded camera installed during the 2009 servicing mission, Hubble reveals fine structural detail that helps astronomers study how young stars interact with and reshape their environment.
NASA scientists described the nebula’s appearance as evocative of "a marine sea lemon, or sea slug," noting that the scene is "reminiscent of an underwater scene filled with fine-grained sediments fluttering through the ocean’s depths."
What the Image Shows
The Trifid Nebula is a vibrant, colorful cloud roughly 5,000 light-years from Earth in the constellation Sagittarius. First cataloged by Charles Messier in 1764, it is home to several massive stars whose winds and radiation have been sculpting the region for at least 300,000 years. Those powerful stellar winds inflate a bubble that is visible in the new Hubble view and help trigger successive waves of star formation across the cloud.
Over millions of years the gas and dust that currently define the Trifid will disperse, leaving behind the stars they helped create. Observations like Hubble’s allow astronomers to watch these processes in action and learn how stellar nurseries evolve.
Hubble’s Legacy and the Future of Space Observatories
Hubble marked 35 years in orbit in April 2025 since its 1990 launch aboard the space shuttle Discovery. During its decades of operation it has transformed our understanding of the universe — from probing exoplanet atmospheres to contributing to evidence for dark energy. The 2021 launch of the James Webb Space Telescope has enabled astronomers to combine data from both observatories to pursue new discoveries.
Looking ahead, NASA is preparing the Nancy Grace Roman Space Telescope, currently targeted to launch as early as fall 2026, which will expand wide-field infrared observations and further complement Hubble and Webb science.
Reporting credit: Eric Lagatta, Space Connect reporter for the USA TODAY Network. Original reporting appeared on USA TODAY: "Hubble telescope takes fresh look at nebula nearly 30 years later."
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