What is the purpose of 'evolved Laser Interferometer Space "Antenna (eLISA)' project ?

Gives a concrete example (LIGO) of a laser interferometer being used to sense distortions in spacetime (gravitational waves).

A student can note that laser interferometers are used to detect gravitational waves and therefore would suspect eLISA (a laser interferometer in space) is aimed at gravitational waves rather than neutrinos.

Explains lasers as beams of light and gives practical context for laser use (optical phenomena), distinguishing laser photons from other particles.

A student can use this to recall that lasers detect/measure light-based effects, whereas neutrinos are different particles requiring different detector technology.

Describes the Cosmic Microwave Background as electromagnetic (microwave) radiation, illustrating that astrophysical observations distinguish between electromagnetic signals and other messengers.

A student can extend this rule: astronomy uses different instruments for different messengers (EM waves vs. neutrinos vs. gravitational waves), so instrument purpose follows the type of signal targeted.

Notes global trends in space programmes (space exploration and security) and that space missions attract specific technical investments.

A student can infer that specialized space missions usually have specific scientific goals (e.g., detecting a particular messenger), so one should check eLISA's stated target rather than assume neutrinos.

Mentions space probes and the Deep Space Network used to support interplanetary missions, showing that space missions use tailored ground/space infrastructure.

A student can use this pattern to reason that a space-based detector like eLISA would be paired with mission-specific support for its primary observable (e.g., interferometry for waves) rather than neutrino detection infrastructure.