MSLS

MSLs is a common acronym that can refer to several distinct concepts depending on the field. This article summarizes the most widely used meanings in space exploration, the pharmaceutical industry, and geodesy.

Mars Science Laboratory (MSL) is a NASA Mars rover mission managed by the Jet Propulsion Laboratory. Launched in 2011, the rover Curiosity landed on Mars in August 2012 to evaluate past habitability by studying geology, climate, and chemistry with an instrument suite of cameras, spectrometers, a laser-induced breakdown spectrometer, environmental sensors, and more. Findings include evidence of ancient water and organic molecules; Curiosity continues to explore Gale Crater and contribute to models of Mars' evolution.

Medical Science Liaison (MSL) is a field-based role in pharmaceutical, biotechnology, and life sciences companies. MSLs act as scientific peers who provide medical information to healthcare professionals, support clinical trials, and gather insights to guide medical strategy. They do not engage in product promotion; instead, they enable evidence-based decisions in collaboration with Medical Affairs and within regulatory guidelines. Typical requirements include advanced degrees (MD, PhD, PharmD, or MSc) and strong skills in scientific communication, data interpretation, and relationship-building.

Mean Sea Level (MSL) is a geodetic reference surface used to measure elevations and depths. It represents an average sea surface over time, adjusted for tides and seasonal changes, and tied to a geoid or ellipsoid. MSL underpins mapping, construction, aviation, and climate science, though local seas vary with tides, currents, gravity anomalies, and climate-related changes.