Solar System / Scale

The Sun Burns 600 Million Tonnes of Fuel Per Second — and That's What Keeps You in Orbit

2026-09-25
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Every second, the Sun consumes 600 million tonnes of itself.

Every second, the Sun consumes 600 million tonnes of itself — fusing hydrogen into helium in a process so violent it generates enough gravity to hold eight planets in their tracks across billions of kilometres. That single fact tells you something about the balance of power here. The Sun doesn't just dominate the solar system — it essentially is the solar system. About 99.8% of all the mass out here belongs to it. Every planet, every moon, every asteroid and comet you've ever heard of shares the remaining 0.2%. Around 1.3 million Earths could fit inside it by volume. Jupiter, the largest planet, is a footnote. Earth is a footnote's footnote. The solar system isn't a neighbourhood of worlds — it's a star, with some debris in tow. Follow Deep Field Vault for more of the universe, one true fact at a time.

600 million tonnes

  • fused every
  • single second

99.8% of all mass

  • belongs to
  • the Sun alone

Everything else?

  • Every planet, moon,
  • asteroid, comet —
  • just 0.2%

1.3 million Earths

  • fit inside
  • the Sun by volume

The solar system

  • is a star
  • with debris
Imagery: NASA (public domain) · View original on NASA ↗
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