Keywords
arrow, artwork, astrometry, astronomy, astrophysics, balance, barycenter, barycentre, binary stars, binary systems, black background, center, center of gravity, circle, color image, diagram, digitally generated image, direction, drawing, geophysics, gravity, horizontal, illustration, mass, no people, orbit, planetary science, rendition, representation, round, science, space, sphere, text, weight, stock illustration, royalty free illustrations, stock clip art icon, stock clipart icons, logo, line art, EPS picture, pictures, graphic, graphics, drawing, drawings, vector image, artwork, EPS vector arts, fine art prints, print, poster, posters, mural, wall murals, rmr100008s