Clyde Tombaugh, who was born on this day in 1906, grew up on a farm in Kansas and was captivated by sights of the moon and ...

When Pioneer 10 flew by Jupiter on Dec. 3, 1973, its margin of survival was closer to the knife-edge than it seemed. It absorbed a thousand times the lethal dose of radiation for a human, suffering ...

Every planet has its symbolism! Do you know Neptune's? Discover its hidden astrological meaning and significance.

These icy bodies orbit the sun just like the major planets, yet they follow their own rules, often traveling along elongated ...

On Feb. 3, Uranus will finally station direct, after a retrograde journey that began in September last year ...

To say “expect the unexpected” would be an understatement — messages could arrive that alter your perception of stability and ...

Saturn's icy rings, first observed in 1610, span 282,000 km and are 10-100m thick. Voyager 1 discovered Jupiter's faint, dusty rings in 1979, extending ~226,000 km. Voyager 2 found Neptune's 5 rings + ...

Every once in a while, the outer solar system reminds us that we've only discovered a negligible portion of it, and that the vast majority is still full of surprises. The latest example of this is a ...