10/14/2026
From the Moon to Earth, from Earth to Jupiter, and from our Sun to the mind-blowing scale of Stephenson 2-18 and Phoenix A* cosmic size comparison reveals just how tiny our place in the universe really is. 🤯
🌕 The Moon is only about 27% of Earth’s diameter.
🌍 Earth could fit inside the Sun roughly 1.3 million times by volume.
🪐 Jupiter, the largest planet in our Solar System, is about 11 times wider than Earth.
☀️ Our Sun is enormous compared to Earth, yet it looks tiny next to red supergiants like Stephenson 2-18.
⭐ Stephenson 2-18 is estimated to be around 2,000 times the Sun’s radius, although its exact size remains uncertain.
🕳️ TON 618 is an ultramassive black hole with an estimated mass of about 40 billion Suns — so massive that its event horizon could span hundreds of billions of kilometres.
🔥 And Phoenix? The largest known black hole in the universe, it’s even 40% bigger than the TON 618 in event horizon diameter!
The most unbelievable part? Even the biggest things we know are only a tiny fraction of the observable universe. 🌌
💬 Which object shocked you the most?
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