Planets

Ancient life on Mars could hide in karstic caves; water-carved caverns in Hebrus Valles offer protected environments preserving biosignatures from...

Earth and Theia were neighbors in inner Solar System before collision—iron isotope analysis reveals proto-planet origins and shapes Moon-forming impact...

Scientists studying a gassy baby galaxy witness cosmic chaos that mirrors humanity’s long search for liquid water on Mars and...

Universe can expand faster than light; relativity permits cosmic expansion exceeding light speed at distances beyond Hubble sphere while preserving...

Three runaway stars solved a galactic mystery; hypervelocity stars reveal Large Magellanic Cloud's orbital path and supermassive black hole location...

Exoplanets in the remnants of a dwarf galaxy; VOYAGERS survey searches for planets around ancient low-metallicity stars from merged Gaia-Enceladus...

Mars orbiter reveals dust avalanche patterns—new study shows what happens on Mars today involves seasonal slope streaks moving quarter of...

Oldest stars are planet killers—new study shows aging stars destroy close-orbiting gas giants through tidal forces, with destruction rates increasing...

The 'anti-weather' of Venus revealed through new modeling—diurnal wind cycles and dust transport differ dramatically between highlands, lowlands, and polar...

Astronomers spot a white dwarf still actively consuming planetary remnants 3 billion years after stellar death, revealing delayed planetary system...