scientists find 7 earth-size worlds orbiting star ... - solar traffic light system

Cape canaveral, Florida. —
Astronomers discovered seven Earth for the first time.
A large and small planet orbiting a nearby star.
These new worlds can hold life.
This cluster of planets is less than 40 light.
According to NASA and Belgian airlines, there are still a few years to go before Aquarius.
The leading research group for the discovery was announced on Wednesday.
The planet is tightly around a dwarf star called Trappist --
Only Jupiter is so big.
Three of them.
Known as the habitable zone, it is an area where water and life may exist around a star.
The others are at the door.
Scientists say they need to study the atmosphere before determining whether these rocks, Earth-like planets can support some kind of life.
But it shows the number of the Earth.
There could be big asteroids.
Especially in the sweet spots of stars that mature for alien life.
The more planets like this, the more likely it is to find planets that are truly suitable for human habitation.
So far, there are only two or three Earth.
Planets of varying sizes were found around a star. A rocky Earth-
The world of magnitude within the stellar habitable area is considered to be the best candidate for finding evidence of life.
"We have taken a critical step towards finding out if there is a life," said amauri Triaud, a researcher at the University of Cambridge.
More potential for the Earth
A small planet in our galaxy. boggling.
History of the Earth
Sarah Segal, an astrophysicist at the Massachusetts Institute of Technology, said the search showed "more when there is one ".
"With this amazing system, we know there will be more potential lives --
"There is a world out there waiting to be discovered," she said . ".
Thomas Zurbuchen, NASA's deputy director of scientific missions, said the finding "gave us a hint of what the second Earth is not just a problem, but when," and the age of the address-
"Are we alone outside?
"We took a step forward in this regard, in fact, towards answering this question," Zurbuchen said at a press conference . ".
Last spring, Michael Gillon of Liege University and his team reported that three planets were found around Trappist --1.
The maximum number of people now is seven, and Gilon says there may be more.
Their latest findings are published in the journal Nature.
This crowded and compact solar system
235 trillion miles away.
According to the researchers, this is reminiscent of Jupiter and its Calvary Satellite.
Imagine if Trappist-
If it is our sun, then all seven planets will enter the orbit of Mercury.
Mercury is the innermost planet of the solar system.
The ultra-cold star at the center of this system will emit 200 times more light than our sun, which is the eternal twilight we know.
The stars will shine red. maybe salmon-
The researchers speculated that it was people of color.
"The scene will be beautiful because you will see another planet from time to time, probably twice as many as the moon in the sky, triaud said on a conference call with reporters on Tuesday: "It depends on which planet you are on and which planet you look. ".
The year is very short in this stellar system.
It takes only 1 1/2 to 20 days for planets to orbit1.
The Ignas Snellen of the Leiden Observatory, who was not involved in the study, was excited to learn more about what he called the prospect of the "Seven Sisters of the Earth.
In a companion article in Nature, he said Giron's team was lucky enough to catch so many Earth-like planets.
"But seven of them passed the Earth.
The size of the planet in such a small sample suggests that there are four solar systems (sub-)Earth-
"There may be nothing unusual about planets of the size," Snellen wrote . ".
In general, astronomers have confirmed nearly 3,600 planets outside our solar system since 1990 generations, but only four dozen planets are in their stars and potential habitable areas of those stars, it's only about 18 Earth's size.
Giron and his team used ground and space telescopes to identify and track seven Trappist-
They simply marked 1 planet with lower case letters "B" to "h"
The letter "A" is typical in these casesin upper case —
It's for the stars.
When planets pass through the stars, they cast shadows on the stars;
This is how scientists discovered them.
Tiny cold stars like Trappist
The outer planets have long avoided. hunters (
Exoplanets outside the solar system).
But astronomers in Belgium have decided to look for them. They have built a telescope in Chile to observe the nearest 60 ultra-cold dwarfs.
Their Trappist telescope named the star.
When you faint, Trappist
According to cosmic standards, one star is very close, which enables astronomers to study the atmosphere of its seven temperate planets.
These seven look as solid as the Earth.
Most of them are rocks, and they may be cold.
They all seem to be locked by the tides, which means that the same side is constantly facing the stars, just as our moon is always facing us.
The researchers explained that life still exists in these places.
"Here, if life can thrive and release gas similar to that on Earth, then we will know," Triaud said . ".
According to Giron, chemical analysis should show life with 99 confidence.
But he added: "If we don't go there, we will never be completely sure . "