Access to NASA's data

An interactive table and plotter for exploring and displaying data from the Exoplanet Orbit Database.

The National Institute of Standards and Technology's online databases. Nearly all have free access.

From the National Renewable Energy Laboratory

Data from NOAA, including bathymetry, geomagnetic data, solar events, geophysics, and natural hazards.

NASA's Earth Observing System Data

A comprehensive set of NASA and other datasets, images, movies, and associated services such as those for viewing orbits or doing simulations.