Young Earth-Sized Planet HD 63433d Discovered in Close Orbit Around Sun-Like Star
The newly discovered planet, tidally locked and with extreme temperatures, provides a unique opportunity to study early stages of planetary evolution.
- HD 63433d, an Earth-sized planet, has been discovered by astronomers, offering a rare glimpse into the early stages of planet evolution due to its close orbit around a young sun-like star.
- The planet is so close to its star that it completes a trip all the way around every 4.2 days and is likely tidally locked, with one side perpetually facing its star and reaching temperatures of 2,300 degrees Fahrenheit.
- HD 63433d's host star, HD 63433, is roughly the same size and star type as our sun, but at about 400 million years old, it’s not even one-tenth our sun’s age.
- The star is about 73 light years away from our own sun and part of the group of stars moving together that make up the constellation Ursa Major, which includes the Big Dipper.
- HD 63433d was discovered as part of a planet-hunting project called THYME, which previously identified two mini-Neptune-sized planets orbiting HD 63433 in 2020.
ScienceAlert 
The Jerusalem Post 
