Jupiter was roughly twice its current size, and by some estimates as much as two and a half times, a...
SCIENCE
July 07, 2026
We tend to think of Jupiter as permanently giant, but a 2025 study found it used to be twice its current size, with a magnetic field 50 times more powerful, and it is still quietly shrinking by about 2 centimetres every year
Jupiter was roughly twice its current size, and by some estimates as much as two and a half times, around 3.8 million years after the solar system's first.
Jupiter was roughly twice its current size, and by some estimates as much as two and a half times, around 3.8 million years after the solar system's first.
Author: Space Daily
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