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NASA's Hubble Space Telescope caught comet C/2025 K1 fragmenting into at least four pieces across three days, marking the closest-to-breakup observation in the telescope's history.

Two March discoveries reveal a 10-billion-year-old lava world with a thick atmosphere and a sulfur-dominated planet unlike anything in existing classification systems.

Kīlauea's 43rd eruptive episode on March 10 produced record 540-meter lava fountains and sent ash across communities 80 kilometers away, prompting closures and flight cancellations as USGS forecasts Episode 44 for late March.

Three separate satellite programs are converging in 2026 to transform wildfire detection from space, while university researchers benchmark AI models that could process the flood of new orbital data.

NASA's James Webb Space Telescope has captured the most detailed images yet of nebula PMR 1, nicknamed the Exposed Cranium, revealing a two-light-year-wide structure shaped by jets from a massive dying star roughly 5,000 light-years away in the constellation Vela.

Six months of observations of the third interstellar object ever detected have uncovered water, methane, and hydrogen cyanide in its coma--and a Jupiter flyby on March 16 could yield the closest-ever look at an interstellar visitor.

CDG-2, a near-invisible galaxy 300 million light-years away, is the first detected solely through its globular cluster population. Roughly 99% of its mass is dark matter.