Asteroid 162173 Ryugu is a carbon-rich pile of rubble, with an orbit that passes between Earth and Mars and a shape that resembles a kilometer-wide spinning top. Scientists think that Ryugu contains pristine organic material from the dawn of the solar system – and that it could hold clues to the formation and evolution of life. That’s why the Japan Aerospace Exploration Agency (JAXA) sent the Hayabusa2 spacecraft to study Ryugu and collect a sample, which it delivered to the Australian Outback in December 2020. Now, NASA scientist Heather Graham has received a box of Ryugu’s treasures from her JAXA colleagues, bringing a relic of the early solar system to a lab on Earth.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0