UPSC 2022ScienceModerate

Which one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media ?

A
A hypersonic missile is launched into space to counter the asteroid approaching the Earth and explode it in space.
B
A spacecraft lands on another planet after making several orbital motions.
C
A missile is put into a stable orbit around the Earth and deorbits over a target on the Earth.
Correct Answer
D
A spacecraft moves along a comet with the same speed and places a probe on its surface.

Explanation

Option (C) is correct because the Fractional Orbital Bombardment System (FOBS) involves launching a warhead into a low Earth orbit and using a retro-rocket to de-orbit it before it completes a full revolution, allowing it to strike a target from an unpredictable direction. Option (A) is a common distractor but is incorrect as it describes planetary defense against asteroids rather than a strategic weapon delivery system. The core concept tested is the mechanism of advanced missile technology designed to evade traditional early-warning radar and missile defense systems by not following a standard ballistic trajectory.

Space TechnologyBallistic Missile TechnologyFractional Orbital Bombardment System (FOBS)hypersonic missilestable orbitdeorbittargetspace warfarenuclear weaponsICBM

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