Life Sustained by Invisible Light Discovered in New Mexico Caves.

New Mexico's Unique Microbes: A New Frontier for Extraterrestrial Life Science

According to TSN.ua: Biologists have discovered unique microbes within New Mexico's caves that can sustain themselves using invisible infrared light. This finding challenges our fundamental understanding of photosynthesis and the potential for life on other planets. The research was conducted in Carlsbad Caverns National Park, a system of 119 caves, including the famous Carlsbad Cavern, whose 'Big Room' stretches for nearly 1.2 kilometers. This discovery is particularly significant for astrobiology, as it reveals life's ability to exploit energy sources once thought to be unusable.

In 2018, Hazel Barton joined a scientific expedition to Carlsbad that identified microorganisms capable of harvesting energy from infrared light. These microbes, including cyanobacteria, possess special types of chlorophyll—D and F—enabling them to perform photosynthesis in a completely sheltered environment. Hazel Barton noted:

"The limestone that makes up the cave absorbs almost all visible light."

The study revealed that these microorganisms are present in nearly all parts of the cave system. Lars Berendt, one of the researchers, confirmed that

"we have shown they are not merely surviving here, but are actively photosynthesizing in a fully sheltered environment."

New Aims for Future Research

Scientists have outlined new objectives for future investigation, including:

• determining the maximum wavelength and minimum light level that can still support photosynthesis;
• exploring new frontiers in microbiology and astrobiology;
• highlighting the importance of searching for life in extreme environments.

This research underscores how diverse and adaptable life can be, even in Earth's most extreme settings. The discovery of microbes capable of photosynthesis without visible light could inspire new searches for life forms on planets with conditions similar to those in Carlsbad Caverns. It may also influence the development of new energy technologies by harnessing the natural mechanisms found in these microorganisms.