Planets in our solar system can be divided into two main groups,Terrestrial PlanetsandGas Giants. Planets that orbit other stars are referred to asExoplanets. Click on any planet below to find out more about it: The Planets Mercury Facts ...
Scientists have discovered over 4,000 exoplanets outside of our Solar System, according to NASA's Exoplanet Archive.
they may be much more common in one of the closest associations in the solar neighbourhood. Young moving stellar groups are the best targets for direct imaging of exoplanets and four massive Jupiter-like planets have been
exoplanetstransit observationsWe present a software to determine the size of an exoplanet and the inclination of its orbit to the plane of the sky from the light curves of transits. The computational code was tested by several transits of planet TrES-3b, the data on which ...
If confirmed, it would be one of the lightest exoplanets discovered, with a mass a little more than a quarter of Earth’s. This size points to a rocky composition. If it exists, it completes its orbit in 5.1 days, making it too close to the star, and therefore too hot, to be in ...
If both mass and radius are known, the mean density of the planet can be used to derive its composition and compare it to planets in our own Solar System. Exoplanets with a mass of less than 10 Earth masses are commonly considered rocky planets and exoplanets with a mass known to be ...
These comparisons are useful for nearby planets such as Mars, but are perhaps even more relevant when attempting to understand the plasma environments of more distant bodies such as the icy moons of the giant planets and rocky exoplanets.
With billions of stars in our galaxy (银河系), many circled by planets, the chances are there should be advanced life capable of reaching out to us. Yet after decades of looking and listening, we have found___. This apparent conflict is known as Fermi’s paradox- Some have used it ...
Exoplanet exploration has revealed that many—perhaps most—terrestrial exoplanets formed with substantial H2-rich envelopes, seemingly in contrast to solar system terrestrials, for which there is scant evidence of long-lived primary atmospheres. It is n
Kepler-138c and d are “twin” planets, with virtually the same size and mass, while they were previously thought to be drastically different. The closer-in planet, Kepler-138b, on the other hand, is confirmed to be a small Mars-mass planet, one of the smallest exopla...