With reference to 'LIGO (Laser Inferometer Gravitational-wave Observatory)', which of the following statements is/ are correct?
1. LIGO is the world's largest gravitational wave observatory
2. The Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo detectors recorded an unknown or unanticipated 'burst' of gravitational waves on January 14, 2020.
Which among the above statements is/ are correct?
1) 1 only
2) 2 only
3) Both 1 and 2
4) Neither 1 nor 2