Evolved Laser Interferometer Space Antenna gravitational waves

The evolved Laser Interferometer Space Antenna (eLISA), now known as LISA (Laser Interferometer Space Antenna), is a space-based gravitational wave detector under development by ESA, NASA, and international partners. Its primary purpose is to detect gravitational waves—ripples in spacetime caused by massive accelerating objects like colliding black holes or neutron stars. LISA will be complementary to ground-based detectors like LIGO and VIRGO. Option (a) is incorrect as neutrino detection requires different technology (neutrino telescopes). Option (c) is unrelated to LISA's scientific purpose. Option (d) is also not the purpose of this mission. LISA represents the next frontier in gravitational wave astronomy after the groundbreaking LIGO-VIRGO detections. > eLISA Mission: Space-based interferometer → detects gravitational waves from distant cosmic events. Answer: (b).