Key Takeaways
1. NASA’s Kepler and TESS missions have discovered over 3,000 exoplanets, with Kepler focusing on a small area and TESS surveying nearly the entire sky.
2. AI software ExoMiner was developed to verify new exoplanets using Kepler data, and an improved version called ExoMiner++ has been created to analyze data from both Kepler and TESS.
3. ExoMiner++ identifies dimming events in stars to determine if they are caused by exoplanets transiting in front of them, initially finding 7,000 potential exoplanets.
4. ExoMiner++ is freely accessible for anyone to use, which is expected to accelerate exoplanet discoveries.
5. Future developments of ExoMiner++ will allow it to detect signals directly from raw data, enhancing its application in upcoming missions like NASA’s Nancy Grace Roman Space Telescope.
NASA’s retired Kepler and the active TESS (Transiting Exoplanet Survey Satellite) have played a crucial role in finding over 3,000 exoplanets. Kepler focused on closely studying a small area of the sky to find these planets. Meanwhile, TESS is surveying almost the entire sky. The data gathered from both missions is examined to reveal more exoplanets.
AI and Exoplanet Discovery
In 2021, a group of NASA scientists developed a software that utilized artificial intelligence (AI) to verify 370 new exoplanets using Kepler’s data. This AI tool is named ExoMiner. Recently, they have introduced a better version called ExoMiner++. This upgraded model has been trained on data from both Kepler and TESS, allowing it to recognize exoplanets in TESS data.
Identifying Dimming Events
When telescopes like TESS look at a star, they sometimes notice a decrease in the star’s brightness. This dimming may be due to an exoplanet moving in front of it, which is known as a transit. However, other cosmic events can also cause this dimming. ExoMiner++ is specifically designed to determine which dimming events are caused by exoplanets. In its first run, the algorithm found 7,000 potential exoplanets.
ExoMiner++ is available for anyone to use at no cost. This free access is predicted to speed up the discovery of exoplanets.
Future Developments
A new version of ExoMiner++ is already being planned. Unlike the current version, which depends on existing signals of possible transits, the next model will be capable of detecting signals directly from raw data. Scientists are optimistic about applying ExoMiner models in future exoplanet-hunting projects, such as NASA’s Nancy Grace Roman Space Telescope. The ExoMiner++ algorithm was detailed in a paper published in the Astronomical Journal.
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