Science occupations

A scientist is an expert who conducts scientific research to advance knowledge in science.

thumb|NASA astronaut [[Bruce McCandless II using a Manned Maneuvering Unit outside on shuttle mission STS-41-B in 1984.]] An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member of a spacecraft. Although generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and space tourists. In the United States, it is a designated term used by three agencies:

An engineer is a practitioner of engineering. The word engineer (Latin , Ir is the term and or title of an engineer in countries like Belgium, The Netherlands, and Indonesia) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of a licensed professional engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professional practice (culminating in a project report or thesis) and passage of engineeri

thumb|upright=1.5|A voting session is conducted in 2006 International Astronomical Union's general assembly for determining a new definition of a planet

thumb|upright|Albert Einstein, a key theoretical physicist in the twentieth century who developed the [[theory of relativity and parts of early quantum theory ]]

thumb|250px|The Apothecary or The Chemist, a portrait by Gabriël Metsu,

right|thumb|Francesco Redi, founder of [[biology]]

thumb|The Geographer (1668–69), by [[Johannes Vermeer ]]

A geologist is a scientist who studies the structure, composition, and history of Earth. Geologists incorporate techniques from physics, chemistry, biology, mathematics, and geography to perform research in the field and the laboratory. Geologists work in the energy and mining sectors to exploit natural resources. They monitor environmental hazards such as earthquakes, volcanoes, tsunamis and landslides. Geologists are also important contributors to climate change discussions.

A technician is a worker in a field of technology who is proficient in the relevant skill and technique, with a relatively practical understanding of the theoretical principles.

A meteorologist is a scientist who studies and works in the field of meteorology aiming to understand or predict Earth's atmospheric phenomena including the weather. Those who study meteorological phenomena are meteorologists in research, while those using mathematical models and knowledge to prepare daily weather forecasts are called weather forecasters or operational meteorologists.

thumb|Biochemist working in biochemical laboratory

healthcare professional

thumb|Gregor Mendel is often known as the "father of modern genetics."

A microbiologist (from Greek ) is a scientist who studies microscopic life forms and processes. This includes study of the growth, interactions and characteristics of microscopic organisms such as bacteria, algae, fungi, and some types of parasites and their vectors. Most microbiologists work in offices and/or research facilities, both in private biotechnology companies and in academia. Most microbiologists specialize in a given topic within microbiology such as bacteriology, parasitology, virology, or immunology.

profession

thumb|220px|A collage of different bacteria viewed under a microscope. A bacteriologist is a microbiologist, or similarly trained professional, in bacteriology— a subdivision of microbiology that studies bacteria, typically pathogenic ones. Bacteriologists are interested in studying and learning about bacteria, as well as using their skills in clinical settings. This includes investigating properties of bacteria such as morphology, ecology, genetics and biochemistry, phylogenetics, genomics and many other areas related to bacteria like disease diagnostic testing. Alongside human and animal hea

thumb|Santiago Ramón y Cajal, the father of modern [[neuroscience and a Spanish neuroscientist, received the Nobel Prize in Medicine in 1906 for his discovery of the neuron doctrine. He shared the prize with Camillo Golgi, an Italian neuroscientist who was recognized for his staining technique that allowed neurons to be visualized.]]

financially independent scientist who pursues scientific study without direct affiliation to a public institution

set of applied sciences applying portions of natural science or formal science, or both, to knowledge, interventions, or technology that are of use in healthcare or public health

profession

thumb|A volcanologist sampling lava using a rock hammer and a bucket of water

member of a diplomatic mission

specialist in tools to enhance learning

scientist trained in biology, particularly in the context of medicine

specialist who is trained in the skills and techniques related to a specific branch of engineering

training regimen used to prepare for spaceflight

occupation

head of scientific research operations

person(s) in charge of conducting a research project