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

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

To detect gravitational waves

To study solar flare effects on communications

To detect neutrinos

To assess missile defence system effectiveness

2. How many spacecraft does the eLISA gravitational wave detector design use?

One

Two

Three, in a triangular formation

Five

3. What physical effect does a passing gravitational wave produce that eLISA is designed to detect?

A change in spacecraft temperature

A tiny stretching and squeezing of distance between the spacecraft

A radio signal burst

A change in spacecraft colour

4. Why can’t ground-based detectors like LIGO sense the lowest-frequency gravitational waves?

They lack sufficient funding

Ground vibrations and arm-length limits get in the way

They were only built after 2020

They are designed only for radio waves

5. The full-scale LISA mission that eLISA fed into is being developed by which space agency, targeted for launch around 2035?

NASA

ISRO

European Space Agency (ESA)

Roscosmos

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