SA Special Editions

Kepler-1708 b-i appears to be a giant moon orbiting a Jupiter-sized planet thousands of light-years from Earth

The author of a new book reveals the hidden human history of NASA’s in-development Europa Clipper mission

The problem would likely plague every technological civilization throughout the universe, says astrophysicist Adam Frank

Even a galaxy teeming with star-hopping alien civilizations should still harbor isolated, unvisited worlds—and Earth might be among them

Astronomers are hunting for the first moon around a planet beyond our solar system

Strange bodies from beyond the solar system have defied predictions

What Venus can teach us about planets far beyond our own solar system

Why we are probably the only intelligent life in the galaxy

The emergence of the human “dataome” is like a sudden invasion of Earth

A major report outlining the highest priorities and recommendations for U.S. astronomy has finally been released, revealing the shape of things to come

Scientists are beginning to dream of how a new generation of super-heavy-lift rockets might enable revolutionary space telescopes and bigger, bolder interplanetary missions