Astronomes find two new exoplanets…
Astrophysicists detected by U.S. space telescope Kepler Exoplanet November 2, comparable to Saturn, and possibly a third planet, the size of Earth, orbiting a distant star, like the Sun in our solar system.
The researchers, whose discovery was published in Science Express – on line edition of U.S. magazine Science – states that these two giant planets, dubbed Kepler and Kepler-9b-9c, makes a complete rotation around their star in 19.2 days , 38.9 days respectively.
Their speed of rotation around the heavenly body is not entirely constant, but varies in a range of 4-39 minutes per rotation. This anomaly is explained, according to astronomers, the strong gravitational interaction between the two planets. A third planet, isolated in turn would pass through the same stars, but with a constant frequency.
Given the “signatures” their gravity, Kepler, Kepler-9b and 9c are the most massive planets orbiting around a star, being “linked” to each other through their gravity forces, said Matthew Holman, an astrophysicist at Harvard University U.S., lead author of the study.
These observations and measurements will give astrophysicists the tools to determine the physical properties of the two planets.
According to researchers, is that solar system may contain a third planet, smaller, a size comparable to Earth. The planet, whose existence has not yet been confirmed, they are very close orbit its star, around which makes a complete revolution in 1.6 days.
New solar system discovered by Kepler satellite is over 2,000 light-years from Earth in the constellation Lyra. A light year is equivalent to 9.460 billion kilometers.