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Biosphere Oceans Solid earth Radiance or Imagery

Recent Imagery

You will be directed to the NASA Visible Earth webpage when you select Images by Mission below, or click on the images at right that are randomly generated to represent four out of all possible topics.

Understanding Earth: Our Ocean

Understanding Earth: Our Ocean

Viewed from space, Earth appears as a blue marble, as approximately 70% of Earth’s surface is covered by ocean water. The vast ocean holds roughly 97% of the planet’s water and represents 99% of the living space on Earth. NASA has been observing Earth’s ocean from space for more than 38 years, beginning with the launch of the first civilian oceanographic satellite, Seasat, on January 28, 1978. This brochure explains how NASA has the ability to observe and detect changes in the ocean (and on Earth as a whole) on a variety of spatial and temporal scales—ultimately positioning the Agency to improve life on our planet.