It's not as simple as listing just three aspects of science, as it's a complex and multifaceted field. However, we can identify three key interconnected pillars that form the foundation of scientific practice:

1. Empirical Observation: This is the foundation of science. It involves carefully observing the natural world through experiments, measurements, and data collection. Science relies on evidence gathered through the senses and validated by instruments.

2. Theoretical Explanation: Observations lead to the development of explanations, hypotheses, and theories. These frameworks attempt to explain the "why" and "how" behind the observed phenomena. Theories are constantly tested and refined through further observation and experimentation.

3. Methodical Inquiry: This refers to the systematic and rigorous approach used to investigate the natural world. It includes:

* Formulating testable hypotheses: Ideas are framed as testable predictions to be investigated.

* Designing experiments: Controlled procedures are used to isolate variables and test hypotheses.

* Analyzing data: Collected data is meticulously analyzed and interpreted to draw conclusions.

* Peer review: Scientific findings are scrutinized by other scientists to ensure accuracy and validity.

These three pillars constantly interact and influence each other, driving the advancement of scientific knowledge.

It's important to remember that science is a process, not a set of facts. It is constantly evolving as new discoveries are made and existing theories are challenged and refined.