The interstellar object 3I/ATLAS presents an intriguing mystery with its uncertain nucleus size. New data and theories could help measure its mass and reveal its true nature as it approaches Mars in 2025.
Astronomers have long predicted a collision between the Milky Way and Andromeda, but new research suggests the fate of our galaxy is more uncertain than previously thought. A recent study shows only a 50% chance of merger within the next 10 billion years, revealing the complexities of galactic movement.
A new study reveals that Andromeda's satellite galaxies are arranged in a strange, lopsided manner, challenging our understanding of galaxy formation and dark matter's role in the universe.
