Active small bodies—including comets, active asteroids, icy minor planets, and transitional objects—occupy a unique position in planetary science. As ...

New observations show a small Saturn moon has generated electromagnetic waves that extend more than 313,000 miles behind it inside Saturn’s magnetic field. That newly measured reach reveals a tiny icy ...

Solar eclipses happen when the Moon passes between the Sun and Earth, casting a shadow on our planet. Depending on distance ...

Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised ...

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

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 ...

The first few exoplanets were discovered in the early 1990s. But it wasn’t until the early 2000s, when astronomers began carrying out large-scale, long-term surveys of other stars, that we started to ...

A factory employing 500 people making 2 million solar panels a year, adjacent to a 125-acre solar field and a 40-acre solar pond generating clean power, may be coming to Waukegan on land once a U.S.

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

One of the most divisive topics among environmental advocates and researchers is the claim that the growth of rooftop solar leads to a concerning transfer of costs from households that have solar to ...

It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...