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Cosmic Mysteries: Hubble Tension and Elusive Planet Nine

10/5/2025

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Summary

Story summary

The Hubble tension arises from conflicting expansion measurements: 67 km/s and 73 km/s.
Fast radio bursts (FRBs) are powerful spikes of radio waves linked to massive stellar events.
Gamma-ray burst GRB 250702B lasted a day, challenging prior understanding of such phenomena.
Planet Nine remains elusive as astronomers debate its existence amid clustering icy objects beyond Pluto.

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Story summary

The Hubble tension arises from conflicting expansion measurements: 67 km/s and 73 km/s.
Fast radio bursts (FRBs) are powerful spikes of radio waves linked to massive stellar events.
Gamma-ray burst GRB 250702B lasted a day, challenging prior understanding of such phenomena.
Planet Nine remains elusive as astronomers debate its existence amid clustering icy objects beyond Pluto.