In 2025, the European Space Agency launched an unprecedented mission with the Euclid telescope, focusing its gaze on the heart of the Milky Way galaxy. In just 26 hours, this telescope achieved a remarkable scientific feat by capturing the most detailed and clear image of this star-filled region of the galaxy.
Details of the Euclid Mission
The Euclid telescope was designed to study dark energy, the mysterious force responsible for the accelerated expansion of the universe. Although the primary aim was to study distant galaxies, its ability to distinguish individual stars in the galaxy’s central bulge made it an ideal tool for exploring this star-rich area.
The telescope captured an image containing 60 million stars, providing scientists with an opportunity to search for exoplanets in this region known as the galactic bulge.
The Role of Microlensing in Planet Discovery
Microlensing is a type of weak gravitational lensing that occurs when massive objects distort the space around them. As light passes through this distortion, its path bends, allowing scientists to study the background sources of this light. This technique has been effectively used to detect some of the oldest distant galaxies.
Microlensing enables the discovery of planets when a star passes in front of another, causing small disturbances in the lensing process, which allows scientists to detect these planets even if they are far from their stars.
Results and Future Prospects
Although the Euclid telescope could not detect microlensing events due to the short observation period, the data it collected will serve as a foundational reference for further studies. The upcoming Nancy Grace Roman Space Telescope is expected to use this data to monitor the region for longer periods to discover astronomical events related to microlensing.
This image from Euclid contains 51 known planetary systems and will aid in studying many other systems that will be discovered in the future.
Conclusion
The Euclid mission marks an important step in space exploration, providing data that will benefit future studies on exoplanets and other astronomical phenomena. It also highlights the power of international collaboration in achieving scientific milestones that serve all of humanity, paving the way for new discoveries in astronomy and the universe.