Editing Giotto (spacecraft) (section)

=== Science Instruments ===
Giotto had 10 science instruments.<ref>{{Cite web|title=Giotto – PSA – Cosmos|url=https://www.cosmos.esa.int/web/psa/giotto|access-date=2022-01-19|website=www.cosmos.esa.int}}</ref><ref>{{Cite web|title=ESA Science & Technology – Instruments|url=https://sci.esa.int/web/giotto/-/31882-instruments|access-date=2022-01-19|website=sci.esa.int}}</ref>

* MAG: a magnetometer 
* HMC (Halley Multicolour Camera): a 16-cm telescope and camera
* DID (Dust Impactor Detector System): measured the mass of dust particles that hit the instrument
* RPA (Rème Plasma Analyser): studied solar wind and charged particles
* JPA (Johnstone Plasma Analyser): also measured solar wind and charged particles
* PIA (Particulate Impact Analyser): studied the size and chemistry of particles
* OPE (Optical Probe Experiment): examined the emissivity of gas and dust behind the spacecraft
* EPA (Energetic Particle Analyser): analyzed alpha-particles, electrons, and neutrons
* NMS (Neutral Mass Spectrometer): measured the composition of the particles around the comet
* IMS (Ion Mass Spectrometer): measured the amount of ions from the sun and the comet
* GRE (Giotto Radio Experiment): used Giotto's radio signals to study Halley's comet