Planets smaller than Neptune but larger than Earth, with atmospheres saturated with water vapor due to extreme temperatures, ...

I'm a planetary scientist who was born the year of Sputnik's launch. Over the course of my 40-year career, I've witnessed not ...

Scientists have discovered that Mars has an interior structure similar to Earth's. Results from NASA's InSight mission ...

Space weathering expert Michelle Thompson OSIRIS-REx reveals why some gray asteroids reflect light at different wavelengths, ...

The U.S. planetary science community is sounding the alarm about plans to discard a nuclear technology that has powered dozens of NASA missions over the past 50 years ...

Scientists have calculated the odds of a catastrophic asteroid impact compared to other causes of death—to surprising results.

Scientists have recreated the extreme conditions found on the frozen moons of the outer solar system and uncovered something ...

Most cosmic dust exhibits random atomic structures, and appears like soot. Thanks to NGC 6302’s extreme stellar energy, the ...

Using data from NASA’s retired InSight lander, two separate teams of researchers found evidence of a sluggish Martian mantle ...

Asteroids have long been described as the leftover pieces from the solar system’s early construction. They are like the screws, sawdust, and scraps left behind after a house is built, drifting through ...

Mars’ glaciers are over 80% pure ice, formed by similar processes worldwide. This discovery sheds light on past climate and ...

While initial studies and reports indicated that glaciers on Mars were composed mainly of rock and dust, recent planetary missions prove otherwise.