Across the galaxy, astronomers now see that planetary systems fall into four broad classes, and our own solar system, part of the rare Ordered group, is only one of them. At the same time, discoveries ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune orbit most stars. Oddly, our sun lacks such a planet. That's been a source ...

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing ...

A new machine learning model has predicted that there are 44 Earth-like planets in other star systems in the Milky Way galaxy, with researchers from Switzerland claiming that the algorithm at the core ...

Astronomers using ALMA have uncovered how gas and dust in planet-forming disks evolve separately an insight that reshapes our understanding of how different types of planets form. While dust lingers, ...

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new study. A combination of cosmic processes shapes the ...

Scientists have finally worked out where the most common kinds of planets come from. In recent years, the discovery of thousands of exoplanets – or worlds around other stars – has shown us that most ...

The discovery of the Kuiper Belt fundamentally reshaped our understanding of the solar system's architecture and population, revealing a far larger and more complex system than previously imagined.

GREAT FALLS — A fourth-grader at Riverview Elementary School has won the National Geographic planetary mnemonic contest, developing a handy way to remember the newly assigned 11 planets, including ...

Scientists have finally worked out where the most common kinds of planets come from. That has made their origin somewhat mysterious. Until now, researchers have struggled to understand where these ...