Hubble Portrait of Ancient Star Cluster M30

A new portrait from the NASA and European Space Agency Hubble Space Telescope shows the ancient star cluster Messier 30 in sharper, richer detail than ever before, and the picture carries a surprising hint about our own galaxy’s past. The Hubble star cluster M30 image, released on 5 November 2026, combines three Hubble observing programmes spread across 15 years, blending ultraviolet, visible and near-infrared light into one view of a glittering ball of stars some 27,500 light-years from Earth. M30 holds several hundred thousand stars in a ball only about 90 light-years across, and astronomers estimate their ages at 11.5 to 13.5 billion years.

The finished image draws on all three datasets, each adding information about how the stars formed and evolved. One programme surveyed dozens of Milky Way globular clusters in red and near-infrared light, revealing stars with as little as 20 percent of the Sun’s mass. Another returned with Hubble’s Wide Field Camera 3 and three bluer filters, gathering data for studying exotic stellar populations. A third tracked how the cluster’s stellar populations have moved over the 15 years since Hubble first observed them. Together, they give the most detailed multi-wavelength portrait of M30 that the telescope has produced, showing stars of different ages and compositions side by side.

What Hubble star cluster M30 suggests

The portrait hints that the Milky Way may not have built all of its oldest neighbours itself, but captured some of them from other galaxies long ago. Globular clusters like M30 are among the oldest objects in the galaxy, and their stars carry chemical clues about where they formed. If some clusters were stolen from smaller galaxies that merged with the Milky Way, their stars should show patterns that differ from clusters born inside our galaxy. Hubble has observed the sky since the space shuttle carried it into orbit in April 1990, and its longevity, more than 35 years in service, is what makes portraits like this possible, by revisiting the same targets again and again.

Source: World Daily News Hub