... Tonight's Sky . ... Young super-Jupiter found wandering without a parent . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... Astronomers find missing matter . ... The missing baryonic matter helps trace out the structure of intergalactic space, called the "cosmic web." ... Now, in an extensive search of the local universe, astronomers say they have definitively found about half of the missing normal matter, called baryons, in the spaces between the galaxies. ...