1,300,000 Earths
Approximate volume of the Sun compared with Earth.
Scale tools
How big is big?
Textbook diagrams squash the Sun and stretch the gaps. Here diameters and distances use consistent scales so Jupiter actually dwarfs Earth — and empty space still wins.
Relative diameters
Circles scale with real equatorial diameters. Toggle the Sun on to see how small even Jupiter becomes.
Earth = 12,742 km across. Circle areas scale with diameter for easy visual comparison of width.
Pick two worlds
Choose any pair and read the diameter ratio, surface gravity difference, and year length side by side.
Distance from the Sun
Each tick is one astronomical unit (Earth–Sun average). Scroll sideways on small screens — Neptune sits near 30 AU.
If Earth were 1 cm from the Sun on this ruler, Neptune would sit about 30 cm out — and the next star would be kilometers away.
Quick numbers
1,300 Earths
About how many Earths fit inside Jupiter by volume.
8 light-minutes
Time for sunlight to reach Earth at 299,792 km/s.
~4 light-hours
Sunlight travel time to Neptune at its average distance.