science & techESA/Hubble

A dense star cluster in the Large Magellanic Cloud acts as a fossil record of very early star formation

the gist

Hubble has imaged NGC 1841, a densely packed globular cluster inside the Large Magellanic Cloud, a satellite galaxy about 162,000 light-years away. The Large Magellanic Cloud is visible to the naked eye from the Southern Hemisphere and is home to many globular clusters. Globular clusters sit between open clusters and small compact galaxies, and their stars are often very old because the clusters are stable and long-lasting. Their origins are still not well understood. Because they hold many ancient stars, astronomers treat them as celestial fossils. Studying clusters like NGC 1841 therefore offers clues about how stars formed in the early history of galaxies.

so what

Globular clusters help astronomers reconstruct the early life of galaxies, much as fossils reveal the early history of life on Earth. Their formation remains an open question, so each well-observed cluster matters.

fun fact

The Large Magellanic Cloud is the largest and brightest satellite galaxy of the Milky Way.

ESA/Hubble · CC BY 4.0

Image: ESA/Hubble & NASA, A. Sarajedini, F. Niederhofer