What is the purpose of 'evolved Laser Interferometer Space Antenna (eLISA)' project?
A
To detect neutrinos
B
To detect gravitational waves
Correct Answer
C
To detect the effectiveness of missile defence system
D
To study the effect of solar flares on our communication systems
Explanation
The eLISA project is a space-based observatory designed to detect gravitational waves by measuring minute fluctuations in the distance between three spacecraft using laser interferometry. While option (a) is a common distractor because neutrinos are also elusive cosmic signals, they are typically detected using massive underground or under-ice sensors rather than space-based laser arrays. The core concept tested is the detection of ripples in spacetime caused by massive astronomical events, such as the merging of supermassive black holes.
Space Technology & AstronomyGravitational Wave DetectioneLISALaser Interferometer Space Antennagravitational wavesspace observatoryastrophysicsLIGO