AI Insight
Researchers using the James Webb Space Telescope and Hubble Space Telescope have confirmed that Terzan 5, previously classified as a globular star cluster, belongs to a newly identified class of objects called "bulge fossil fragments." These objects are remnants from the early formation of the Milky Way galaxy that have survived to the present day. Terzan 5 serves as the prototype example of these ancient galactic survivors.
Why it matters
This discovery provides direct evidence of how our galaxy formed and evolved in its earliest stages. Understanding these fossil fragments helps astronomers reconstruct the Milky Way's formation history and may reveal similar structures in other galaxies.
Researchers have confirmed a new class of objects within our Milky Way galaxy: survivors called ‘bulge fossil fragments.’ Terzan 5 is the prototype of these remnants of our galaxy’s early formation. Using the NASA/ESA/CSA James Webb Space Telescope and the NASA/ESA Hubble Space Telescopes researchers have shown that Terzan 5 is not a globular star cluster as it was once classified. Instead, it is something much odder and rarer.
Source: Webb & Hubble reveal relic of our galaxy’s formation