November 03, 2023

TWiS 86: Home is Where the Air Is - Life Support to Mars with Grant Anderson

1 hour 2 minutes

We all know you must carry breathable air and drinkable water with you into space... but when traveling to Mars, how can you ensure your life support system will keep working all the way there and beyond? Technology is fallible, and when talking about life support—breathable air, temperature control, and potable water—all are non-negotiable and critical to survival. It's enough to give engineers nightmares. Grant Anderson, the president and CEO of Paragon Space Development Corporation, has been working on these problems since early in his career, and his company is developing mission-critical systems today. We join Grant to learn about how we can be assured that Tariq and I will still have enough air to tell bad space jokes in month 6 of our trip to Mars.

Headlines:

Predicting a fierce upcoming solar maximum starting in late 2024, about a year earlier than forecasted

Exploring the potential impact on Earth of dangerous explosions called "kilonovas" from distant neutron stars

Remembering Apollo 16 astronaut Ken Mattingly, who has passed away at age 87

Main Topic: The Challenges of Life Support in Space:

Guest Grant Anderson gives his background - degrees from Stanford, 10 years at Lockheed, starting Paragon in 1993 to provide life support for extreme environments

Paragon's first biological experiments in space focused on enclosed stable ecosystems with shrimp and algae

Anderson explains how sweat and humidity are collected, gases removed, and water purified for drinking on the ISS

The hosts are amazed by Paragon's tech saving 98% of astronaut urine and sweat, critical for deep space missions

Qualifying life support hardware for zero-g remains challenging - failures in space rarely match those in 1g on Earth

Looking ahead to Mars, Anderson is concerned about abrupt breakdowns in life support and inadequate medical capabilities

Rotating spacecraft to create artificial gravity could help address unknown impacts of long-term weightlessness

Anderson details innovations like selective air bypass to efficiently clean only parts of the airflow inside a spacecraft or habitat

Miniaturization of sensors and electronics has helped, but some key needs remain

Grant emphasizes life support isn't "sexy," but it's the critical technology needed for all human spaceflight

Pyle and Malik joke about the challenges of scaling up from SpaceX's Dragon life support for crews of 4-7 to Musk's visions of 100 people on Starship missions

Anderson reflects on his surprising prediction that bio-regenerative life support for

Mars transit might operate more like a brewery than a farm

Hosts: Rod Pyle and Tariq Malik

Guest: Grant Anderson

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