NASA is exploring our oceans to find life on other worlds
In short: While NASA is famous for its rockets, it is also looking inward at our own oceans. By studying Earth's deep seas, scientists are developing the tools and knowledge needed to search for life on icy moons hundreds of miles beneath their frozen surfaces.
NASA's interest in the deep ocean is inextricably linked to its search for extraterrestrial life. Scientists are particularly focused on icy moons in our solar system where vast oceans—potentially hundreds of miles deep—are hidden beneath thick layers of ice. By understanding the mechanics of life and water in our own oceans, researchers can better prepare for missions to these distant, frozen worlds.
To explore these environments, NASA must overcome significant technological hurdles. For instance, underwater images are often distorted by the refraction of light through waves, which can make objects appear larger or smaller depending on the water's movement. To solve this, NASA scientist Ved Chirayath developed 'fluid lensing' and a specialized camera called FluidCam. This technology uses unique software to turn wave distortion into an advantage, improving image resolution to 1/2 cm and allowing for the capture of 3D images of habitats like coral reefs.
Furthermore, mapping the seafloor is a primary objective. Currently, only about 25% of the ocean floor has been surveyed using direct sonar measurements from ships. To fill this gap, NASA collaborated with the French space agency CNES to use the SWOT (Surface Water and Ocean Topography) satellite. By measuring gravitational pulls and water height differences, they can create topographic maps of the seafloor. These maps are essential for understanding deep-sea currents, plate tectonics, and the movement of heat and nutrients that sustain life in the abyss.
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Sources
- Summary by Intellect · source: What's NASA Looking For At The Bottom Of The Ocean?
- Also: Exploring Beneath the Waves - NASA Science
- Also: Next-Generation Water Satellite Maps Seafloor From Space - NASA
- Also: Next-Generation Water Satellite Maps Seafloor From Space – NASA SWOT
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