Beta Pictoris b

Beta Pictoris b was discovered in 2008 using direct imaging techniques, specifically utilizing the NACO instrument on the European Southern Observatory's Very Large Telescope in Chile. Because it is a massive gas giant, roughly 7 to 11 times the mass of Jupiter, it emits enough infrared heat to be seen directly. This made it one of the very first exoplanets to be directly photographed.

Beta Pictoris b takes approximately 21 to 28 Earth years to complete a single orbit around its parent star, Beta Pictoris. This relatively short orbital period, combined with the planet's young age, allowed astronomers to observe a significant portion of its journey. In 2020, scientists announced they had captured the shadow of the planet passing in front of the star.

The Beta Pictoris star system is estimated to be only about 20 to 23 million years old, making it extremely young on a cosmic scale. Our own solar system, by comparison, is roughly 4.5 billion years old. Studying this young system gives astronomers a rare, real-time look at the chaotic processes of planetary formation and the evolution of a debris disk.

While no moons have been definitively confirmed, astronomers have observed massive, rapid brightness fluctuations around the planet that suggest the presence of giant rings or circumplanetary debris. In 2020, researchers used the Gemini Planet Imager to capture a "transit" event where the planet's surroundings blocked the star's light. These massive structures could eventually coalesce into exomoons.