Notice anything different about Jupiter in your telescope lately? Astronomers have observed that one of Jupiter’s most recognizable features, the Great Red Spot, has been shrinking since the mid 1990s, according to CNN. The Great Red Spot is actually a giant, persistent, seemingly eternal storm that’s about the same size across as three complete Earths. But astronomers have noted that since 1996, the spot has lost about 15 percent of its size.
Xylar Asay-Davis, a postdoctoral researcher who was part of the study, said in the article that it measures up to a shrinkage of about one kilometer (about 0.6 miles) per day during that time period. While the shrinking size of the GRS isn’t news, the report said that
this research focused on the motion of the storm–which produced much
more reliable measurements.