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Discovery of 7 nasa planets will be an alternative to Earth

the discovery of Nasa planets alternative the Earth  is of interest to many and appears to be a very important historical event in NASA’s history

7 Alternatives to the Earth! .. NASA unveils a historical discovery of planets can live on .. Here are the details
NASA has detected seven Earth-like planets that can be lived on, NASA said on Wednesday (February 22nd, 2017).

first at allThe newly discovered solar system is 40 light-years away from Earth and contains seven rocky planets, and the seven planets orbiting the earth around a small, very cold star.  also The new solar system is one of the largest systems detected outside our system. and It is a major breakthrough in the continuous search for extraterrestrial life, and the surface of these planets may have a temperature close to the ground and suitable for liquid water that may exist on its surface.

NASA PLANET
NASA PLANET

in addition to This diagram shows: at the top, the seven planets discovered and their rotation periods around the star (raheb 1), the distance between them and the star and its half-diameter and mass compared with the Earth.  also Below are data on Mercury, Venus and Mars (NASA source).

also Scientists – who seemed very optimistic about their ability to get a deeper look at the progress of search tools and telescopes – said the question now about how to live outside the globe has become a past. The question is: When will we get to the new planets? The Washington Post reported.

in addition to The solar system, which was announced in detail Wednesday,  also is not a new discovery. It was announced last year by the researchers themselves, but at this time they discovered only three planets, and they looked closer to more accurate telescopes, including the Spitzer Telescope NASA space station, they found the rest of the nearby planets.

Discovery Details of  NASA PLANET

Discovery Details
Discovery Details

further more The researchers said the discovered system contains more planets than any previously discovered system, an ideal laboratory to study distant worlds and could be the best place in the galaxy to look for extraterrestrial life.
also The newly discovered system is like a miniature version of our solar system.  and The star (monk 1) is in the center, a cool dwarf star. also The planets circulate around it. It takes about a day and a half to complete its cycle, while the longest takes 20 days. If the star is bigger and brighter, Because of the short distance between them and the star, but its current position allows it to obtain the warmth and heat appropriate for the presence of liquid water on the back and three of these planets get the amount of heat similar to Venus, Earth and Mars, and thus exist in the moderate area of habitable and life growth.

most of all It is similar to the Earth in terms of size, mass, energy, starch and warm rock. Scientists will need to monitor and analyze more of the atmosphere and look for the possibility of vital matter on the surface of these planets.

star raheb 1
picture compare star raheb 1 with our sun

Why is this discovery important?

The first step to finding life outside our planet is to find a planet that looks like us: small and rocky and at the right distance from the star to receive light and heat to the extent that water is allowed on its surface.

and “This is the first time that a group of Earth-like planets have been found around this star,” said Michael Gillon, the lead author of the journal Nature. The possibility of water and life on its surface is a possibility. Three of the planets – in the habitable zone around the star – may be rich in water on its surface, “and even the remaining four may contain water based on the composition of its atmosphere.

in addition to The solar system is very different from our system. also It is composed of a very cold star because it is small (approximately one tenth the size of our sun and one thousandth of our sun’s brightness) and its mass is low enough to allow the planets to rotate around it and stay in the habitable zone around it.

The distance between the star (raheb 1) and its rocky

The distance between the star (raheb 1) and its rocky parallel is similar to the distance between Jupiter and its moons, but the planets detected are closer to Earth (10-20% or more)
It is this star that led to the discovery of this system. When astronomers search for outer planets, they usually search for a temporary delay of one of the stars. This is an indication that the planets have passed before it, and this method does not work with the big bright stars that do not Small planets appear because of them.

 star (raheb 1)
distance between the star (raheb 1) and its rocky parallel

The video shows how NASA scientists analyze the presence of planets as they rotate around the observed star

What is really interesting in this discovery is that “these seven planets are very well suited to study their atmosphere,” says Jilon. The James Webb Space Telescope will launch in 2018 and has the ability to measure the chemical composition of the planetary atmosphere, Such as ozone, oxygen or methane, it would be a sign of life there. “We expect that within a few years we will know a lot about these seven planets,” says Amauri Triad, a co-author of the paper.
With this discovery, we have made a giant leap to search for other worlds of habitation and life. “We may discover small, cool stars like Monk 1 that may be common in the galaxy and help us get closer to Earth-like planets,” scientists say. How to live outside the globe is no longer the question; but when will we get to the new planets to live on?

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