NASA's Perseverance rover has stumbled upon an intriguing rock—one that suggests Mars was once capable of hosting microbial life.

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 ...

According to the concretion model, the slow erosion processes that uncover hematite rocks would indicate that the blueberries are thousands of years old.

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.

It doesn't take a lot for some minerals to change color—a small impurity can drastically change how a rock looks. If water played a role in getting the possibly-hematite rock to turn purple ...

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.

The NASA Perseverance rover has discovered a rock with "fascinating traits" that may indicate Mars was home to life billions of years ago.

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.

Here is a look into the science behind the red dirt and rocks that gives Utah its famous national parks and landmarks.

A study suggests Mars takes its red hue from a type of mineral that forms in cool water, which could reveal insights about whether Mars was ever able to support life.