UPSC Prelims 2017 – Question 87

Q87. What is the purpose of ‘evolved Laser Interferometer Space Antenna (ELISA)’ project?

a) To detect neutrinos
b) To detect gravitational waves
c) To detect the effectiveness of missile defence system
d) To study the effect of solar flares on our communication systems

The correct answer is Option 2. 

• Evolved Laser Interferometer Space Antenna (ELISA) 

• The European Space Agency is leading the evolved Laser Interferometer Space Antenna (eLISA) mission. 
• The ELISA project’s goal is to detect and accurately measure gravitational waves. Hence, option 2 is correct. 

• LISA would be the first dedicated gravitational wave detector in space. 
• These gravitational waves are produced by supermassive black holes found at the centres of many galaxies. 
• Elisa will also collect data from thousands of compact binary star systems in the Milky Way

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