Explore every episode of the podcast The Kepler Space Telescope

The Kepler Space Telescope was a NASA space telescope launched in 2009 to discover Earth-sized planets orbiting other stars. It was named after astronomer Johannes Kepler, who discovered the laws of planetary motion in the 17th century.

Kepler used a technique called the transit method to find planets. This method involves looking for tiny dips in the brightness of a star that occur when a planet crosses in front of it. Kepler monitored over 100,000 stars for four years, and during that time it discovered over 2,600 exoplanets, or planets outside our solar system. Some of the most notable discoveries made by Kepler include:

• Kepler-186f, the first Earth-sized planet to be found in the habitable zone of another star. This means that the planet is the right distance from its star to potentially support liquid water on its surface.
• Kepler-452b, the first Earth-sized planet to be found orbiting in the habitable zone of a sun-like star. This means that the planet is very similar to Earth in terms of its size and orbit, and it could potentially be habitable.
• Kepler-62e and Kepler-62f, two Earth-sized planets orbiting in the habitable zone of a star that is smaller and cooler than the Sun. These planets could potentially be habitable, and they are some of the most Earth-like planets yet discovered.

Kepler's mission ended in 2018 when it ran out of fuel. However, the data that it collected continues to be studied by scientists around the world. Kepler's discoveries have revolutionized our understanding of exoplanets, and they have shown that our galaxy is teeming with planets of all shapes and sizes. Kepler's mission has been a huge success, and it has helped us to learn a great deal about the diversity of exoplanets. Kepler's discoveries have also given us hope that there may be other Earth-like planets out there that could potentially support life. The Kepler Space Telescope was officially retired in 2018, but scientists are still continuing to analyze its data. In 2023, a team of astronomers discovered three new exoplanets in Kepler's final dataset. These planets are all located in the same part of the sky, about 400 light-years from Earth. Two of the planets are mini-Neptunes, which are planets that are larger than Earth but smaller than Neptune. The third planet is a planet candidate, which means that it needs to be confirmed by further observations. This discovery is significant because it shows that Kepler was able to find planets in its final dataset, even though it was running low on fuel. This suggests that there may be even more exoplanets out there than we thought. It is also worth noting that the three new planets were all found using artificial intelligence. This shows that AI is a powerful tool that can be used to help us discover new exoplanets. Overall, the discovery of these three new exoplanets is a testament to the Kepler Space Telescope's legacy. Kepler has revolutionized our understanding of exoplanets, and it has shown us that our galaxy is teeming with planets of all shapes and sizes. And just yesterday Scientists found a new system of seven planets orbiting a star that is larger and hotter than the Sun. The planets are so close to their star that they are extremely hot, and they receive more heat per area than any planet in our solar system. Thanks for listening to Quiet Please. Remember to like and share wherever you get your podcasts.