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UNITED STATES.- This Friday, July 6th the Earth will be at its farthest point from the Sun in 2018 this phenomenon is known as aphelion, word d & # 39; Greek origin meaning "far from the sun".
According to unotv.com, the planet will be 152 million kilometers from the Sun, while at the nearest point, called perihelion, it is about 147 million kilometers, which translates into a higher speed low.
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As Kepler's second law points out, when the planets are close to the Sun in their orbit, they move faster that when they are farther away, thus, on July 6, the speed of translation of the orbit will be less than 103,536 km / h, more than 3,600 km / h less than the speed of perihelion . The distance varies because the orbit of the Earth around the Sun is not a perfect but elliptical circumference.
The aphelion takes place every year between July 2 and July 7 . Perihelion took place this year on January 3rd; the greatest distance between the Earth and the Sun will be recorded on July 6, when the planet and its star are 152 million 095 thousand 566 kilometers.
They discover a planet where a year lasts almost 20 days
. the discovery of an unusual planet, by a team of Indian scientists. This is the first time that they have found one orbiting a star very similar to the Sun.
The Discovery Officers are a group of scientists from the Physical Research Laboratory (PRL) of Ahmedabad, India. the portal very interesting.
It was also detected by Kepler as a possible planetary candidate, but Indian experts have confirmed it, instead of a comet or other astronomical object.
Scientists have invested a year and a half in the PRL's Gurushikhar Observatory in Mount Abu, India, to study light changes from the planet's host star, EPIC 211945201 or K2-236, and making an independent confirmation of its mass.
"We present here solid evidence of a sub-Saturn around EPIC 211945201 and confirm its planetary nature," the team reports in the journal The Astronomical Journal which collects the "t-Saturn". study.
The planet revolves around a solar star, but it is more than seven times closer to its star than the Earth's Sun, which means that the temperature could be about 600 ° C and probably too hot and dry to support life.
one year on this planet lasts about 19.5 days. It has a mass about 27 times larger than that of the Earth and it is estimated that its radius is six times larger.
"However, the photometric data of K2 combined with false-positive probability calculations were not sufficient to confirm the planetary nature of the system, therefore an independent measurement of body mass was required for discovery. Astronomers say that their discovery is very significant because it can help astronomers learn more about how astronomers discover the signs of life in K2-236b the planets of this class (super-Neptune or under Saturn) , who are able to form so close to their host star.
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