Question
“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
(a) Voyager – 2
(b) New Horizons
(c) LISA Pathfinder
(d) Evolved LISA
Answer:
D
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Explanation:
LISA Pathfinder, a successful European Space Agency mission, aimed to test the crucial technologies required for the future detection of gravitational waves. These waves were first predicted by Einstein's theory of general relativity in 1915, and LISA (Laser Interferometer Space Antenn(a) is the planned space mission scheduled for launch in 2034. LISA will consist of three spacecraft arranged in an equilateral triangle with sides measuring approximately five million kilometers (three million miles). LISA Pathfinder played a vital role in validating the necessary technology for LISA's gravitational wave detection mission.