New NASA Cassini data shows that Saturn is not the world we once thought it ...

Spacecraft remain the best lens with which humans have viewed the universe beyond Earth. These spacecraft are dedicated to increasing the knowledge of humans. One of the best examples is the ...

The pH scale is a measure of how acidic or alkaline something is, 1 being highly acidic, 14 being highly alkaline, and 7 ...

NASA’s Cassini spacecraft took seven years to travel nearly 2.2 billion miles to reach Saturn. But once it got there in 2004, it started taking some breathtaking pictures of the planet, its ...

NASA's probe has spent the past 13 years orbiting Saturn, making a number of important discoveries along the way. On Friday, it will hurl itself into the planet's atmosphere and disintegrate.

The spacecraft has already provided NASA with much new data. Now it is on its way through the rings of Saturn to the end of its mission.

The Cassini mission has been an unequivocal success — but its fate was not always certain. This is the story of how it got off the ground, told by the people who were there.

After a 20-year voyage, NASA's Cassini spacecraft is poised to dive into Saturn this week to become forever one with the exquisite planet.

The Cassini-Huygens mission — a collaboration of NASA, the European Space Agency and the Italian Space Agency — has been a prolific pioneer of Saturn's moons.

These two images from NASA's Cassini spacecraft show how the spacecraft's perspective changed as it passed within 15,300 miles of Saturn's moon Pan on March 7.