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🌋 Could lava tubes hide signs of life on Mars? To find out, NASA researchers went deep beneath Hawai‘i’s volcanoes to study Earth’s own lava tubes – places where life survives in dark, extreme conditions. Join the expedition in our new documentary as astrobiologists test the technologies that will guide future NASA missions to detect and discover life beyond Earth. Don’t miss Our Alien Earth: Hawai’i, streaming now on NASA : https://go.nasa.gov/4sdN5vP | NASA Solar System Exploration