stellar classification articles

Are O-type stars the hottest?

The short answer to whether O-type stars are the hottest is an emphatic yes. Within the primary sequence of stellar clas...

Why are stars called dwarfs?

The classification of stars into categories like "dwarf" can often sound counterintuitive when we look up at the night s...

How to tell if a star is older?

Determining the age of a star is one of astronomy’s most persistent challenges. Unlike a tree, we cannot simply count ri...

Which group of stars has the lowest temperature?

The hue radiating from a star provides a surprisingly accurate initial gauge of its surface temperature, allowing astron...

What do stellar cycles mean?

The progression of a star through its lifespan, often referred to as its stellar cycle or evolutionary path, describes t...

What is the stellar period?

The duration of a star’s life, often referred to as its **stellar period**, is one of the most fascinating timescales in...

What elements are present in a stellar nebula?

Vast clouds of gas and dust permeate the cosmos, serving as the starting blocks for everything that follows. These cosmi...

What is the order of classification of stars from hottest to coldest?

The way astronomers sort the billions of stars visible in the night sky relies fundamentally on one key physical propert...