Jupiter, the largest planet in our solar system, is not as massive as previously believed. A recent study has revealed that Jupiter is actually slightly smaller and flatter than scientists had thought. This groundbreaking discovery challenges nearly 50 years of established knowledge about the size and shape of the gas giant.
According to the study conducted by researchers at the Weizmann Institute of Science in Rehovot, Israel, Jupiter is eight kilometers narrower at its equator and 24 kilometers flatter at its poles than previously estimated. This new information will require textbooks to be updated to reflect the corrected measurements.
The traditional understanding of Jupiter’s size and shape was based on data collected by NASA’s Voyager and Pioneer spacecraft in the 1970s. However, the Juno mission, launched in 2011 and reaching Jupiter in 2016, provided a new perspective by orbiting over Jupiter’s poles for the first time. This allowed for more accurate observations of the planet’s dimensions.
The revised measurements of Jupiter will have far-reaching implications for scientific research. Scientists will need to adjust their models of the planet to account for its true size and shape. This adjustment will not only impact the study of Jupiter’s volatile atmosphere but also shed light on the formation of gas giants like Jupiter and the early stages of our solar system.
Yohai Kaspi, the senior author of the study, emphasized the significance of this discovery in understanding the origins of our solar system. He noted that Jupiter was likely the first planet to form in our solar system and studying its internal structure can provide valuable insights into the formation of other planets, including Earth.
In conclusion, the recent findings about Jupiter’s size and shape challenge long-standing scientific beliefs and open up new avenues for research in planetary science. By reevaluating our understanding of this massive planet, scientists can deepen their knowledge of planetary formation and evolution.

