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 ...

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

While the presence of these molecules is not proof of ancient life on Mars, scientists say it shows we could detect chemical ...