‘Invisible’ planet discovered with new technique

For the first time, scientists have definitively discovered an “invisible” alien planet by noticing how its gravity affects the orbit of a neighboring world, a new study reports.

NASA’s Kepler space telescope detected both alien planets, which are known as Kepler-19b and Kepler-19c. Kepler spotted 19b as it passed in front of, or transited, its host star. Researchers then inferred the existence of 19c after observing that 19b’s transits periodically came a little later or earlier than expected. The gravity of 19c tugs on 19b, changing its orbit.

The "invisible" world Kepler-19c, seen in the foreground of this artist's conception, was discovered solely through its gravitational influence on the companion world Kepler-19b — the dot crossing the star's face. Kepler-19b is slightly more than twice the diameter of Earth, and is probably a "mini-Neptune." Nothing is known about Kepler-19c other than that it exists.

Vairāk: http://www.msnbc.msn.com/id/44442011/ns/technology_and_science-space/#.Tmz4EOwrV4I


About basicrulesoflife

Year 1935. Interests: Contemporary society problems, quality of life, happiness, understanding and changing ourselves - everything based on scientific evidence. Artificial Intelligence Foundation Latvia, http://www.artificialintelligence.lv Editor.
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