A team of scientists uses the Hubble Space Telescope to search for evidence of planets orbiting distant stars. Which kind of investigation are they carrying out?
They are conducting an observational study.
This type of investigation focuses on gathering data from natural settings without manipulating variables, which is precisely what the scientists are doing by observing distant stars and their potential planets.
A laboratory experiment involves controlled conditions where variables are manipulated to observe effects in a systematic manner. In this case, the scientists are not in a laboratory setting, nor are they manipulating any parameters; they are simply observing celestial bodies from a distance.
A controlled experiment requires a specific hypothesis and involves changing one variable while keeping others constant to observe the outcome. The research conducted with the Hubble Space Telescope does not involve such manipulation; rather, it involves passive observation of astronomical phenomena.
An observational study is characterized by the researcher observing subjects in their natural environment without interference. The scientists using the Hubble Space Telescope to search for planets around distant stars are precisely doing this, collecting data through observation rather than experimentation.
Constructing a model refers to the creation of a representation of a system or phenomenon to predict behaviors or outcomes based on theoretical understanding. While data from the Hubble Space Telescope could inform models of planetary systems, the act of searching for planets is fundamentally observational.
The investigation carried out by the scientists using the Hubble Space Telescope is classified as an observational study since it involves the collection of data through observation of distant stars and potential planetary systems without any manipulation of variables. This method is essential for understanding celestial phenomena in their natural state.
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