Martian clouds are almost always made of dry ice, or frozen carbon dioxide. 95% of the planet's atmosphere is CO2.

Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating and sometimes ...

NASA researchers have identified geological structures on Mars that are unlike anything found on Earth. From spider-like ...

NASA's Perseverance collects the “Silver Mountain” sample in Jezero, revealing geological secrets and possible traces of ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

The space station and one other Easter egg — the site of NASA's next human moon landing — are hidden in this lucky photo.

This week, we examine how a phone call between President Donald Trump and Russian President Vladimir Putin has raised concerns among European nations.

Exploratorium staff said that they will offer several programs throughout the duration of “Look Up” that complement the main ...

Explore the Hibiscus satellite, a cutting-edge thermal imaging satellite designed for affordable, high-resolution hear ...

Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: NASA/MSSS/Caltech/ CTX topography: NASA/MSSS/USGS HiRISE: NASA/U.Arizona/USGS/Amaz ...

Many photos McCarthy has taken of the space station in the past show the ship as a silhouette in Earth's shadow. This time he ...