This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

As the sun grew hotter, so did Mars, prompting much of its atmospheric carbon dioxide to rain out and ultimately get locked up in rocks.

NASA’s Curiosity rover snapped pictures of a long-sought geological structure — dubbed “spiderwebs” — on the Red Planet that indicate a history of flowing water, the space agency announced.

Elemental analysis, especially for sulfur and carbon, is essential in modern mining, helping estimate metal grades, optimize processes, and more.

Monday, 16 June 2025 Multi-Filter Image of NGC 3344 This image of the spiral galaxy NGC 3344, located about 20 million light-years from Earth, is a composite of images taken through seven different ...

NASA’s Curiosity rover has spotted carbon-containing minerals that can tell scientists more about what ancient Mars’ atmosphere may have looked like.

A mineral called siderite found abundantly in rock drilled by a NASA rover on the surface of Mars is providing fresh evidence of the planet's warmer and wetter ancient past when it boasted ...

Siderite can form in multiple ways. But only evaporation would lead to highly pure siderite forming in the same geologic layer as the sulfate minerals the team identified, gypsum and starkeyite.

NASA's Curiosity rover found carbon-rich minerals on Mars, revealing the Red Planet may have once had the right conditions to support life.

Scientists have pondered why Mars seemed to be missing sufficient carbonates indicative of its warm, wet past. Now, NASA’s Curiosity rover may have just solved the mystery.

A NASA rover taking rock samples on Mars has uncovered a plentiful mineral that was invisible to orbiters studying the Red Planet from space. Scientists say the discovery of siderite, a type of ...

Another component of Curiosity's siderite-rich rock samples could tell the team more about the carbon dioxide side of Mars' story.