Key points are not available for this paper at this time.
The "windows" of observational astronomy have become broader. They now include, along with photons from many decades of the electromagnetic spectrum, extraterrestrial "artifacts" of other sorts: cosmic rays, meteorites, particles from solar wind, samples of the lunar surface, and neutrinos. With gravitational-wave, we are on the threshold-or just beyond the threshold-of adding another window; it is a particularly important window because it will us to observe phenomena that cannot be studied adequately by other: gravitational collapse, the interiors of supernovae, black holes, short-period, and perhaps new details of pulsar structure. There is the further possibility that gravitational-wave astronomy will reveal entirely new phenomena-or familiar phenomena in unfamiliar guise-in trying to explain the observations of Joseph Weber.
Press et al. (Fri,) studied this question.