Astronomers using the Hubble Space Telescope have discovered the faintest and smallest known galaxy—Andromeda XXXV. Located 3 million light-years from Earth, it is a satellite of the Andromeda Galaxy (M31). With a mass of just 20,000 solar masses and a size a million times smaller than the Milky Way, this galaxy defies expectations. According to existing theories, such galaxies should have disappeared billions of years ago, yet Andromeda XXXV continues to exist and even forms new stars.
Scientists suspect that the galaxy might have sustained star formation by drawing in gas from Andromeda. This discovery challenges current models of galaxy evolution, as it was previously believed that the hot environment of the early universe prevented the survival of such tiny objects.
Andromeda XXXV is more than just an astronomical curiosity—it holds valuable clues about how galaxies form and endure. Studying it could reshape our understanding of how stellar systems evolved in the early universe. 🌟
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