Settling humans on Mars needs pragmatism at least as much as vision
The martian radiation environment is a problem for human explorers that cannot be overstated
Deep inside a 1968 meteorite fall are grains from an entirely different cosmic era
Are there hints that machine life simply doesn’t happen in the universe?
Ten years, measured in words on astrobiology, exoplanets and the cosmos in general
There may be things to learn from the one known world in the universe dominated by complex machines
Explaining the very long steps of Earth’s oxygenation—and perhaps that of other planets, too
Meandering rivers may hold a vital clue to the earth’s capacity for life
From hummocky to dune- and lake-covered, Titan is revealed in its latest global map
When did we start talking about life from elsewhere?
Some scenarios for interstellar expansion are more disturbing than others
Predictable transits and conjunctions belie a deeper story that includes our origins
The most haunting thing about the universe is how empty it is
Could there be information networks across the galaxy?
A novel idea for the local terraforming of Mars raises interesting possibilities
Forget galaxies, stars and planets; the cosmos is really a complex chemical system
Calling a distant world Earth-like is bad practice; calling it habitable is not much better
There are way more important planetary concerns to direct your attention to
Explosions on Titan, cometary visitors, a black hole merger and water in an exoplanetary atmosphere
For single-celled organisms, Earth’s atmosphere represents transport, refuge and possibly a habitat