Dec 18, 2025 · Scientists call a star that is fusing hydrogen to helium in its core a main sequence star. Main sequence stars make up around 90% of the universe’s stellar population. They …

The seven main types of stars. How they’re classified and their roles in stellar evolution, lifecycle stages, and how they appear in the night sky.

In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism …

Star classification chart & guide. Learn about all the main star types and their characteristics, including life cycle, mass, size, luminosity, temperature.

Aug 29, 2025 · When you look up at the night sky, you’re seeing just a small sample of the incredible variety of the types of stars in the universe. These cosmic powerhouses come in …

Jan 28, 2009 · In truth, stars are about as diverse as anything else in our Universe, falling into one of many different classifications based on its defining characteristics. All in all, there are many...

Dec 4, 2025 · In the 1860s the Italian astronomer Angelo Secchi distinguished four main spectral types of stars.

Aug 8, 2024 · Whilst scientists estimate that there are ~1024 stars in the universe, there are less than 20 types of stars. In this article, we'll take a closer look at the various types of stars and …

Dec 6, 2024 · Astronomers classify stars into seven primary types, known as spectral classes, based on their temperature, color, and spectral characteristics. Here’s an overview of the …

May 3, 2025 · To understand stars is to understand the universe itself. This article takes you deep into the heart of stellar science — from the birth of a star in vast clouds of gas and dust, to its …