Europa Archives

Definition of water diagnostic diagrams using line flux ratios as described in Section 4 and Table 1. Lower limits are marked with grey arrows. Some targets mentioned in the text are labelled for easier visualization. The red arrow marks the direction of increasing column density for the 400 K component, as shown by the model encircled in a dashed red line (model “H+W2 (Tk)” that has a 10 times higher column density than model “H+W2”). Parameters for all the models in this figure are reported in Table 9 in Appendix G. The diagram using the 1500/6000 K line ratio is included in Appendix F. -- astro-ph.EP

Instrument Concepts for Europa Exploration

by Keith CowingApril 19, 2013

The Instrument Concepts for Europa Exploration (ICEE) Program supports the advanced development of spacecraft-based instruments for Europa exploration. The goal of the program is to mature and reduce the technical […]

Icy Worlds

Mapping the Chemistry Needed for Life at Europa

by dale_andersenApril 5, 2013

A new paper led by a NASA researcher shows that hydrogen peroxide is abundant across much of the surface of Jupiter’s moon Europa. A new paper led by a NASA […]