Astronomers announce the number of confirmed alien planets topped a thousand, 1,010 to be exact, on October 22. Image © PHL @ UPR Arecibo, Oct. 2013
The total of exoplanets we know, beyond our solar system, are 1,010, according to the Extrasolar Planets Encyclopaedia. 21 years after the first planets beyond our own Solar System were even confirmed to exist.
The first confirmed exoplanets were discovered by the Arecibo Observatory in 1992.
Consider that now there are more than 3,500 exoplanet candidates waiting for confirmation, from various catalogs list.
“The discovery of many worlds around others stars is a great achievement of science and technology. The work of scientists and engineers from many countries were necessary to achieve this difficult milestone. However, one thousand exoplanets in two decades is still a small fraction of those expected from the billions of stars in our galaxy. The next big goal is to better understand their properties, while detecting many new ones.”
– Prof. Abel Mendéz, Associate Professor of Physics and Astrobiology, UPR Arecibo