Comet C/2025 R2 (SWAN) is set to brighten the October sky, and astronomy experts have shared the best times and directions to spot this rare celestial visitor.
According to a study conducted by University of Tokyo researchers, Ryugu maintained a "pristine record" of late water activity. By examining the lutetium and hafnium isotopes in their rock samples, ...
Astronomers say the water that fills Earth's oceans — and the stuff you use to brew your morning cup of coffee or tea — may be older than the sun itself.
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