Metal-Poor Globular Cluster Estimated at 13.4 Billion Years Old
Astronomers using deep near-infrared observations from the Magellan Baade Telescope and Hubble Space Telescope data have determined that the metal-poor globular cluster VVV CL001 is approximately 13.4 billion years old. Located in the inner bulge of the Milky Way behind dense interstellar dust, the cluster was analyzed using machine learning to identify 155 member stars. The team calculated a distance of about 7.34 kiloparsecs with small uncertainties. If confirmed by upcoming spectroscopic follow-ups, this ancient population could challenge existing models of galactic and universal timelines.
Interstellar Comet 3I/ATLAS Displays Heavy Hydrogen in Methane
Using the James Webb Space Telescope, researchers measured an unusually high heavy-to-ordinary hydrogen ratio in the methane coma of the interstellar comet 3I/ATLAS. The detected deuterium-to-hydrogen ratio of approximately 3.2% is roughly 13 times that of comet 67P and exceeds any methane D/H ratio measured within our solar system. The findings suggest the comet's icy ingredients formed in an intensely cold stellar environment around 10 Kelvin, offering new constraints on early chemistry in distant planetary systems.
Perseverance Rover Analysis Suggests Martian Dust is Less Abrasive Than Lunar Dust
An analysis of spacesuit material swatches carried by NASA's Mars rover Perseverance for 1,645 Martian days reveals that Martian dust may be less abrasive than lunar dust. Unlike the jagged grains encountered during Apollo missions, particles on Mars appear well-rounded from billions of years of wind transport and showed little visible wear. However, researchers noted that Martian dust contains ultrafine particles as small as 100 nanometers and potentially toxic compounds like perchlorates, presenting unique hazards for future crewed exploration.
Written with AI from original reports. Source names and report dates are shown with each story.
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