Resume de l’article : La grande tache rouge de Jupiter frétille et c’est inattendu

Article’s main point: The Great Red Spot on Jupiter, a storm that has been raging on the planet for at least 300 years, is observed to be « fizzing and boiling », with mysterious lightning-like features, according to new observations from NASA’s Juno spacecraft.

Answer to your question: Yes, the Great Red Spot on Jupiter is exhibiting unusual activity, with flashes of light resembling lightning.