Final answer:
Direct detection of gravitational waves from binary systems of neutron stars or black holes is feasible with LIGO and VIRGO observatories, which have successfully recorded such events and confirmed Einstein's theory of general relativity.
Step-by-step explanation:
With current technology, we expect to be able to detect (directly) gravitational waves from a binary system of two neutron stars or two black holes thanks to sophisticated observatories like LIGO and VIRGO. In 2015, LIGO detected gravitational waves from the merger of two black holes, with masses 29 and 36 times that of our Sun, confirming Einstein's predictions. This event converted about 3 solar masses into gravitational waves and had a peak power output exceeding the visible universe's luminosity by a factor of 50. Following this discovery, LIGO and VIRGO have detected about a dozen similar events. Neutron star mergers were also observed, which apart from generating gravitational waves, are associated with short gamma-ray bursts and the production of heavy elements, revealing the celestial mechanics of such astronomical phenomena.