BBC 2 Programme Next Week on Possibility of Life on Pluto

Way back in the 1970s David Bowie as Ziggy Stardust asked if there was life on Mars. Things have advanced since then, and a new programme on BBC 2 next Monday, 6th July 2020, ponders the possibility that life might exist on the dwarf planet traditionally at the edge of our solar system: Pluto. From being a dead world, Pluto is geologically active and possesses organic chemistry, the building blocks of life. Which raises the question of whether life of some sort exists there.

The programme’s titled Pluto: Back from the Dead and theĀ  blurb for it on page 62 on next week’s Radio Times for 4th – 10th July 2020 reads

New discoveries from the edge of the solar system are transforming what is known about Pluto, thanks to the New Horizons space probe that took the first-ever close up images of the dwarf planet. This Horizon documentary reveals that Pluto, once thought to be geologically dead, is an active world of stunning complexity, with mountains carved from ice, a nitrogen glacier that appears to be moving and a recently active volcano. The data sent back has led some scientists to speculate that there may even be life on Pluto today.

David Butcher’s piece about the programme on page 60 adds

There might be life on Pluto. It sounds far fetched, but that’s the conclusion some scientists have reached, and its one of the unexpected new angles explored in this intriguing edition of Horizon.

The insights come courtesy of New Horizons, a tiny spacecraft that travelled 3.26 billion miles to the edge of the solar system, and sent back amazingly detailed imagery.

It reveals a geologically fertile world with, among other features, a nitrogen glacier and a recently active volcano. Moreover, Pluto’s abundant supply of organic molecules and liquid water suggest some form of alien life might exist.

Pluto isn’t alone in possessing mountains of ice. They also exist on Titan and the other moons of the outer solar system. Titan also possesses organic chemistry, which is why scientists are particularly interested in it for clues about the origin of life on Earth. And it was also at one considered that it too may have life. Carl Sagan also suggested that it might even have volcanoes of frozen gas. There’s an illustration of Titan with one such volcano erupting by the astronomy/science Fiction artist David A. Hardy in his and Patrick Moore’s The New Challenge of the Stars. I don’t know if such volcanoes actually exist there. I haven’t seen anything about the Huygens probe to Saturn and its moons finding any.

Scientists also began speculating that life might also exist in the frozen wastes of the outer solar system after someone suggested that the difference of a few degrees’ temperature between light and shadow on them might be enough to provide the energy to drive life. The quantum physicist and SF author Stephen Baxter expanded this into a short story in his Xelee sequence, collected in the his short story anthology, Vacuum Diagrams. I think that story, however, was set further out in one of the dwarf planets of the Kuiper Belt.

After all this time searching the solar system, I think it’s extremely unlikely that there’s life on Pluto. But who knows, perhaps I’m wrong. It would be truly epoch-making if I was and Pluto did possess a biosphere, even if it was only simply microbial organisms.

The programme’s on BBC 2 at 9.00 pm on Monday, 6th July.


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