Universe in a bubble
Maybe we don’t have to speculate about what life is like inside a bubble. It might be the only cosmic reality we know
Echoes of a black hole
Ripples in space-time could herald the demise of general relativity and its replacement by a quantum theory of gravity
Could meteorites be akin to lifeboats from other planets? Or do they reveal more about life on Earth than off it?
Life on Mars
In a white dome on a bare mountain, six of us are road-testing life in a Martian colony. This is what I’ve learned so far