Civil Services Examination · Question 43
"The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft." The experiment in question refers to
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Answer: (D) Evolved LISA
Explanation
Evolved LISA (eLISA) is a planned space gravitational-wave observatory of three spacecraft in a triangle linked by lasers; LISA Pathfinder was a single-craft test mission.