A new technique capable of detecting planets similar to Earth

A team of researchers has participated in the development of a new calibration system capable of detecting Earth-like planets through the use of high-precision technology.

In 2005, scientists John L. Hall (University of Colorado) and Theodor W. Hänsch (Max Planck Institute) won the Nobel Prize in Physics for their contribution to the development of precision “spectroscopy” based on laser techniques to analyze Accurate readings of light and see, for example, the stability of nature over time.

Now, a team of researchers from the Institute of Astrophysics of the Canary Islands has participated in the development of a new calibration system, led by the Max Planck Institute, capable of detecting planets similar to ours. A technology that may be essential for the search for exoplanets in the future based on ‘Laser Frequency’ technology driven by the Nobel Prizes in Physics in 2005.

High precision systems and spectrographs
Scientists around the world have spent decades immersed in the search for Earth-like exoplanets that are capable of harboring life. This has always been one of the great unknowns, whose beginnings date back to 1992 with the discovery of the first exoplanet.

In fact, just a month ago, we announced from Blogthinkbig.com the discovery of a new exoplanet by NASA located 100 light years from Earth and with very similar characteristics. The big difference was that this exoplanet was within the habitability zone of its star.

This recent study, published in the journal Nature Astronomy, has shown that when using this technique the accuracy is very accurate and in the short term, one centimeter per second. A great opportunity to find new planets capable of harboring life that orbit stars like the sun.

Sol artificial

“To date, it has been demonstrated, on longer time scales, of the order of years, an accuracy of approximately 80 centimeters per second, using other means of calibration, but still insufficient for the discovery of a twin of the Earth”, Jonay González Hernández, Ramón y Cajal researcher at IAC and co-author of the article, said in a statement.

The technique uses high-precision spectrographs and is known as ‘radial velocity method’.

One of the tests they have done for research has been the observation of sunlight reflected on a dwarf planet in our solar system: Ceres. «Despite many effects we know on this dwarf planet, we have been able to measure absolute speed with an accuracy of three meters per second; This demonstrates the accuracy of this calibration system », the expert concluded.

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