On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

The European Southern Observatory's Very Large Telescope (VLT) imaged both of the planets directly, and PDS 70b has the ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

New research shows that star activity can distort exoplanet measurements, affecting size, temperature, and atmosphere ...

The planetary parade in February 2025 will see five bright planets in clear view and a special alignment of Mercury and Saturn ...

To better understand why the planets have variable compositions ... to the formation of the gas and ice giants in the outer solar system. This first-order model of planetary growth in the solar ...

"It feels like something out of science fiction," said European Southern Observatory astrophysicist Julia Victoria Seidel.

While our solar system is a fascinating place on its own, exoplanets are even more of a mystery. And one exoplanet in ...

Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant ...

you’re peering into the vast expanse of our solar system. Each planet orbits the Sun at vastly different distances—Mercury sits about 36 million miles, while Neptune is at a stately 2.8 ...