Bananas for Scale
Milky Way

Photo by Graham Holtshausen on Unsplash

Milky Way

Our home galaxy with hundreds of billions of stars/Deep Space

The Milky Way is a barred spiral galaxy that contains our solar system. It spans roughly 100,000 light-years in diameter and harbours an estimated 100 to 400 billion stars. Our Sun is located about 26,000 light-years from the galactic centre, in one of the spiral arms.

Measurements

Disk diameter946 quintillion m
189 quintillionBeaver dam lengths
1 sextillionDoor widths
450 quintillionSurfboards

About 100,000 light-years

Total mass (including dark matter)2.9 trillion nonillion kg
518 octillionTeaspoons of neutron star
38.8 quintillionMoons

About 1.5 trillion solar masses

Disk thickness18.9 quintillion m
1.1 sextillionDime diameters
4.8 quadrillionAkashi Kaikyo spans
259 quintillionLipstick tubes

About 2,000 light-years

Sun's distance from centre247 quintillion m
4.1 quintillionHockey rink lengths
7.1 sextillionWalnut diameters
2.5 sextillionHarmonica lengths

About 26,000 light-years

Sun's orbital speed around centre230,000 m/s
256Rifle bullet speeds
76.7 millionHawaiian lava flows
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