Can the U.S. and China Cooperate in Space?
China’s meteoric rise in space science and exploration—along with its new partnership with Russia—is spurring U.S. experts to reconsider a long-standing prohibition on bilateral collaborations
Unbinding Life, Unbounded
The blog’s author reflects as nine years of writing undergo an evolutionary change
Europa: Three More Clues
We have alien worlds right here in our solar system
Tickling the Asteroid’s Tail
How do you return a piece of asteroid to Earth? Practice
A Good Week for Planet Formation
Building planets is an intricate process, but we’re finding clues to some new possibilities
The Planets and You
Predictable transits and conjunctions belie a deeper story that includes our origins
Tardigrades Were Already on the Moon
It may not be smart to add more, but nature probably beat us to it anyway
The World without the Moon
What if our natural satellite didn’t exist?
11,898 Solar Eclipses in 5,000 Years
Precisely when and where eclipses occur is a complicated business
The Fairy-Tale Asteroid
The asteroid Ryugu gets its naming theme
The 'Oumuamua Legacy
Whatever it was, an interstellar object may have done some good
Arrival at Asteroid Bennu
NASA's asteroid sample-retrieval mission can now really get underway