NASA teams have discovered an exoplanet that is almost the size of Earth and half of which is thought to be covered in lava.
NASA’s TESS (Transiting Exoplanet Survey Satellite) satellite, used for the discovery of exoplanets, has been on duty for about 6 years and has enabled the discovery of many planets. The latest discovery of TESS was announced recently.
According to information shared by NASA, TESS almost the size of the earth and discovered a new planet orbiting a star approximately the size of our Sun.
It may be half covered with lava
Although the planet called HD 63433 d resembles Earth due to its size, it is actually quite different. The first and biggest difference is the planet’s proximity to its sun. To the sun of HD 63433 d 8 times closer than Mercury is to the Sun It is said to be.
Additionally, this new exoplanet completes an orbit around its sun in just 4.2 Earth days. so a ‘year’ is only 4.2 days. The concept of day is also quite different from the one we experience because one side of the planet always faces the sun. So one side is always dark and cold, while the other side is bright and very warm. It is thought that the temperature of this hot side may reach 1,257 degrees. The team that made the discovery and examined the exoplanet thinks that the extremely hot daytime side of the planet may be covered with lava.
Another important difference between HD 63433 d and our Earth is its age. HD 63433 d, a very young planet in a very young system only 400 million years old It is thought to be. When you consider the age of the Earth, which is 4.2 billion, you can better understand how young it is.
The discovery of HD 63433 d, the youngest and closest Earth-like planet discovered so far, will help us understand the formation and evolution of planets.
Source :
https://science.nasa.gov/universe/exoplanets/discovery-alert-earth-sized-planet-has-a-lava-hemisphere/