Life On Mars?

Hannah Devlin reports that NASA’s Curiosity rover has detected several organic molecules in an ancient dried lakebed inside Gale Crater on Mars. Five of the seven identified compounds had not previously been seen on the planet. Scientists say these chemicals are important because they are the kinds of carbon-based materials associated with the building blocks of life on Earth.

However, the discovery is not proof that life ever existed on Mars. The compounds could also have been delivered by meteorites or created through non-biological geological processes.

What makes the finding important is that it suggests complex organic material may have survived in the Martian subsurface for roughly 3.5 billion years, despite harsh radiation and surface conditions.

Devlin notes that this strengthens hopes for future missions, especially ESA’s Rosalind Franklin rover, which is expected to drill deeper and perform more advanced tests on the origin of these compounds.

Curiosity Rover

Reference: Devlin, Hannah. “‘Is it life? We can’t tell’: Nasa’s Curiosity rover finds organic molecules on Mars.” The Guardian, 21 April 2026.