The Largest Star in the Universe – Size Comparison

Summary by Krater

This video explores the scale and variety of stars in the universe, comparing their sizes, masses, and brightness from brown dwarfs and red dwarfs to massive hypergiants like Stephenson 2-18.

From the video

Answers: What are the largest stars in the universe and how do they compare in size?

• star size comparison
• brown dwarfs
• red dwarfs
• main sequence stars
• blue supergiants
• red giants
• hypergiants

What it concludes

• Brown dwarfs are failed stars that cannot sustain full hydrogen fusion.
• Red dwarfs are the most abundant type of star in the universe and can last up to 10 trillion years.
• R136a1 is one of the most massive stars known, with 315 solar masses and extreme stellar winds.
• Stephenson 2-18 is currently thought to be among the largest stars found, with a radius of 2,150 solar radii.