Read the following statements carefully:
1. Scientists have made four new detections of gravitational waves emanating from separate black hole mergers.
2. The gravitational waves were detected by the US-based LIGO and Japan-based TENKO gravitational-wave detectors.
3. The new waves are known as 'GW170729', 'GW170809', 'GW170818', and 'GW170823', in reference to the dates they were detected.
Which of the above statements is/are true?