Astronomy
Why Astronauts Quarantine Before—But Not After—Space Missions
Post-flight isolation ended decades ago when scientists no longer feared moon-derived diseases
Revisiting the Last Crewed Moon Mission on the Eve of the Next
Soon, astronauts might fly farther from Earth than ever before
I Track Space Debris As It Crashes to Earth
A planetary scientist explains how we can stalk this smoking wreckage
Space Dust Could Contain Building Blocks of Life
Protein precursors can form in cosmic dust clouds
The First Person to Get Hit by Space Junk
Decades later, extraterrestrial rubbish is quickly piling up
Tiny Mars has a Big Impact on Our Climate
New research shows the red planet plays an outsized role in Earth’s climate
Spaceflight Prematurely Ages Astronauts
New research looks at the effects of spaceflight on biological age
The First Observation of the Fiery Lifecycle of a Massive Solar Storm
“It’s a milestone in solar physics”
Why Europa Might Not Have Life After All
Europa’s seafloor might be “too quiet” to support life
How Jupiter and Saturn Dictate Earth’s Oil Deposits
Jurassic mudstones reveal how the heavens impact Earth
An Asteroid Impact May Explain Our Lopsided Moon
The crash might have radically transformed the lunar interior
