This artist’s concept illustrates a potential volcanic moon orbiting the exoplanet WASP-49 b, as new evidence suggests that a massive sodium cloud observed near the planet may originate from an exomoon rather than the planet or its star. The existence of a moon outside our solar system remains unconfirmed, but a new NASA-led study may offer indirect evidence for one. Research conducted at NASA’s Jet Propulsion Laboratory has revealed potential signs of a rocky, volcanic moon orbiting an exoplanet located 635 light-years from Earth. A significant clue is a sodium cloud that appears to be close to, yet slightly out of sync with, the exoplanet WASP-49 b, a Saturn-sized gas giant. However, further investigation is necessary to validate the cloud’s behavior. In our solar system, similar gas emissions from Jupiter’s volcanic moon Io create a comparable phenomenon. Although no exomoons (moons of planets outside our solar system) have been confirmed, several candidates have been identifi...
Infinitycosmos: Astronomy news and mission exploration.