AI Insight
Astronomers have discovered a third planet, Beta Pictoris d, orbiting the star Beta Pictoris using the European Southern Observatory's Very Large Telescope. The planet is 100 times fainter than the first planet discovered in this system and ranks among the lightest exoplanets ever imaged from ground-based telescopes. The discovery was made after researchers identified the planet in archival observations that had been collected over more than a decade.
Why it matters
This discovery demonstrates the capability of ground-based telescopes to detect extremely faint exoplanets and highlights the value of systematic re-analysis of archival astronomical data. The finding advances our understanding of planetary system formation and the techniques used to image distant worlds directly.
Understand the Science
A team of astronomers has discovered a third planet orbiting the star Beta Pictoris. The new planet, Beta Pictoris d, is 100 times fainter than Beta Pictoris b—the first planet discovered in the same system—and is among the lightest exoplanets ever imaged from the ground. After spotting the planet using the European Southern Observatory’s Very Large Telescope (ESO’s VLT), the team found it had been hiding in archival observations spanning more than a decade.
Source: Faintest planet ever imaged from Earth found after more than 10 years of hide-and-seek