NASA's Perseverance rover has encountered another rock on Mars that has left scientists puzzled.

The molecules may be remnants of fatty acids, which form cell membranes in Earth’s organisms, though they might have formed ...

NASA’s Curiosity rover has unearthed the largest organic molecules ever detected on Mars—possible fragments of fatty ...

Scientists have found unusual, blueberry-like rocks on Mars that could give us more insights into its geological history.

Curiosity has previously discovered small organic molecules on Mars, but these recently found compounds are larger and would ...