Editing Deep Space 2 (section)

==Science Instruments==
The probes are each equipped with five instruments to enable analysis of the atmosphere, surface, and subsurface.

• ''Descent accelerometer:'' The descent accelerometer was a commercially available sensor meant to measure accelerations from drag during descent. Its readings could “be used to derive a density profile of the Martian atmosphere” based on the acceleration data combined with knowledge of the probe's speed and ballistic coefficient.<ref name=":2">{{Cite web |last=Blue |first=R. C. |date=1998-04-27 |title=Mars Microprobe Project Instrumentation Package |url=https://trs.jpl.nasa.gov/handle/2014/19235 |website=Jet Propulsion Laboratory |language=en-US |hdl=2014/19235 |hdl-access=free}}</ref>

• ''Impact accelerometer:'' The impact accelerometer was built with a range of ±120,000 g for the large expected acceleration on impact with Mars’ surface.<ref name=":2" />

• ''Meteorological sensor:'' provides atmospheric pressure and temperature data at the landing site. This sensor was located on the back of the probe so that it would stay above the surface after impact. It was sampled and recorded by the telecommunications “which enables the acquisition of meteorological data in the event that the microcontroller failed during the impact.”<ref name=":2" />

• ''Soil Thermal Conductivity Temperature Sensors:'' Twin platinum resistor temperature sensors would determine rates of cooling in the forebody once submerged in the surface.<ref name=":2" />

• ''Evolved Water Experiment:'' A small sample collection system in the forebody would bring Martian regolith into a heating chamber. The sample would then be heated to allow spectroscopy measurements on the resulting vapor using a miniaturized [[Tunable diode laser absorption spectroscopy|tunable diode laser]]. The Evolved Water Experiment was the primary instrument on board the probe.<ref name=":1" />