What Is Spectroscopy?

What Is Spectroscopy?

Spectroscopy is a scientific method used to study how matter interacts with light. By observing how light is absorbed, emitted, or scattered by a substance, scientists can determine its composition,…
How Old Is the Universe?

How Old Is the Universe?

The age of the universe is one of the most fundamental questions in cosmology. Scientists estimate that the universe is about 13.8 billion years old. This calculation is based on…