Planetary Science
- 			 Space SpaceHow balloons could one day detect quakes on VenusA new study opens the door for future balloon-based missions to study the geology of other worlds. By Freda Kreier
- 			 Space SpaceHow Mars rovers have evolved in 25 years of exploring the Red PlanetOver 25 years, remotely controlled rovers have uncovered Mars’ watery history and continue to search for evidence that life once existed there. 
- 			 Planetary Science Planetary ScienceAstronauts might be able to use asteroid soil to grow cropsResearchers grew romaine lettuce, chili pepper and pink radish plants in mixtures of faux asteroid soil and peat moss. By Liz Kruesi
- 			 Space SpaceAmateur astronomers’ images of a rare double aurora may unlock its secretsWith breathtaking videos, citizen scientists have shown researchers a new pattern of auroras that may solve the mystery behind a strange red glow. By Asa Stahl
- 			 Planetary Science Planetary ScienceA new look at the ‘mineral kingdom’ may transform how we search for lifeA new census of Earth’s crystal past hints that life may have begun earlier than expected, and could be a tool to look for water and life elsewhere. By Asa Stahl
- 			 Earth Earth50 years ago, a new theory of Earth’s core began solidifyingIn 1972, scientists proposed that Earth’s core formed as the planet came together. Fifty years later, that theory is generally accepted, though many mysteries about the core remain. By Nikk Ogasa
- 			 Astronomy AstronomyNew Gaia data paint the most detailed picture yet of the Milky WayGaia’s new data can tell us about galaxies the Milky Way has swallowed, the young solar system and asteroids that could hit Earth. By Asa Stahl
- 			 Planetary Science Planetary ScienceSamples of the asteroid Ryugu are scientists’ purest pieces of the solar systemSamples Hayabusa2 brought to Earth from asteroid Ryugu are far fresher than similar types of meteorites that scientists have found. By Liz Kruesi
- 			 Planetary Science Planetary ScienceIce at the moon’s poles might have come from ancient volcanoesVolcanic eruptions billions of years ago probably released enough water vapor to have deposited ice at the lunar poles, a study finds. By Anna Gibbs
- 			 Plants PlantsThese are the first plants grown in moon dirtThe first attempt to grow plants in Apollo samples from the moon shows the promise and potential struggles of farming in lunar soil. 
- 			 Planetary Science Planetary ScienceNASA’s InSight lander has recorded the largest Marsquake yetThe magnitude 5 temblor, detected May 4, will help scientists learn more about the Red Planet’s interior. 
- 			 Planetary Science Planetary ScienceLava and frost may form the mysterious lumps on Jupiter’s moon IoJets of gas released when hot meets cold on the volcanic moon Io could generate sprawling fields of dunes, a study finds. By Nikk Ogasa