At first glance, the rock’s most distinctive features are long white veins of calcium sulfate and bands of what is likely hematite, an element that contributes to Mars’ red coloring.

How did rocks rust on Earth and turn red? A new study has shed new light on the important phenomenon and will help address questions about the Late Triassic climate more than 200 million years ago ...

Scientists once believed our planetary next-door neighbor got its rusty hue from hematite, a common iron ore known for its ...

Research conducted on rock samples from the mid 1800s has revealed that there is a type of hematite that loses some iron atoms and swaps them for water molecules. The same minerals on Mars might ...

On Mars, most of the hematite rocks are about 0.16 inches (4 millimeters) in diameter, and no larger than 0.24 inches (6.2 millimeters). By contrast, Earth spherules exhibit a large range of sizes ...

With its iconic rusty hue, Mars has long been called the red planet. Now, scientists may have discovered the potential source of that distinctive coloring, overturning a popular theory in the process.

NASA’s Perseverance Mars rover took this selfie, made up of 62 individual images, on July 23, 2024. The rock nicknamed “Cheyava Falls,” which may indicate ancient life, is to the left of the ...

The Perseverance rover has found evidence in a leopard-spotted rock that could suggest microbial life once existed on Mars billions of years ago, NASA said.

Iron-rich hematite, commonly found in rocks and soil, turns out to have magnetic properties that make it a promising material for ultrafast next-generation computing Date: April 25, 2025 ...

In hematite-laced sedimentary rocks on Earth, chemical reactions can create similar pale, ringed spots—and these reactions liberate energy that can sustain single-celled organisms within the stone.