solar street lighting system Found: a planet we might survive on

An Australian astronomers said it was an "incredibly exciting" Earth that could be habitable --Planets of the size have been discovered.It runs around a nearby star, and astronomers think there may be more planets like it.The planet -Astronomers at the University of California, Santa Cruz and the Carnegie Institute in Washington foundRun in the middle track of the red dwarf Gliese 581 "habitable", meaning it may have water on its surface.
Scientists say liquid water and atmosphere are necessary for a planet to sustain life, even if it may not be a good place to live.The discovery of this planet is significant because it is "the first planet we have found that is definitely in the Golden Circle," said Simon O'Toole, a research scientist at the Australian observatory.The Goldilocks region is an area in which a planet is only the right distance from its star.
This means that it is neither too hot nor too cold, and it is the ideal temperature to live in."It's important because we always want to know, 'are we alone?Is there life outside?Dr. Toller said."In our galaxy, we see thousands of stars, and not all of them are sensitive to that.
\ "There are hundreds of billions of stars in our galaxy.To find another habitable planet among thousands of starsSample size like this-This shows that there must be a lot of these planets.Dr. O'Toole said that the discovery of astronomers was a "great job" because planets as big as Earth were hard to find.
Planets like Jupiter are relatively easy to find because they are large and leave a big signal.This is incredibly exciting.This is something we have been slowly moving forward for the past 15 years.Next week, 15 years ago, we discovered the first exoplanet to surround a star like the sun.
It's been almost 15 years now and we're looking for a planet that can sustain life.This is great.Scientists have determined that the planet they call Gliese 581g is three to four times the mass of the Earth and has an orbital cycle of less than 37 days.Its quality suggests that it may be a rocky planet with enough gravity to maintain the atmosphere, says Steven Vogt, professor of astronomy and astrophysics at the University of California, Santa Cruz, discover a leader of the team on this planet.
If the rock composition of Gliese 581g is similar to that of Earth, it is about 1 in diameter.2 to 1.The researchers said it was four times the size of the Earth.Professor Vogt said that the gravity on the surface of the Earth is about the same or slightly higher than the Earth, so that one can easily walk upright on the Earth.
Gliese 581 grams was discovered by scientists who studied Lick.The Carnegie exoplanets survey observed Gliese 581, 20 light years from Earth, in 11 years.For astronomers, 11 years of observation is considered a very short time, 20 light years, about 190 trillion kilometers, quite close.
The sun is about 8 light years from Earth.Dr. O \ 'toole said it could take thousands of years to use today's technology to get to Gliese 581g."I don't think we can use the Earth's environment as an escape route if it becomes too toxic.
The planet is locked in its stars by tides, which means that one side is always facing the stars, basking in the sun in eternal daylight, and the other side is in eternal darkness because it is away from the stars.As the surface temperature decreases, people will go further to the dark side of the Earth, and as they enter the bright side, the temperature will increase, and the most suitable part for living will be the line between darkness and light, it's called the Terminator ".The researchers believe that the average surface temperature of the Earth is-31 and -12 degrees Celsius.
But they say the actual temperature will range from "hot on the side facing the star to cold on the dark side.The findings will be published in the journal Astrophysical and published on the arXiv website."There is a very compelling reason for a potential habitable planet," said Professor Vogt ".
"Any emerging form of life on the Nova ball will have a wide range of stable climate options and evolve according to their direction," said Professor Vogt .".In their report, scientists announced the discovery of two planets near Gliese 581, bringing the total number of known planets around the star to six.This is the most found in planetary systems outside the Earth's solar system.
Like planets in the Earth's solar system, planets near Gliese 581 have nearly circular orbits.The two planets previously found around Gliese are on the edge of the livable zone, one on the hot side of the star and one on the cold side of the star, which may not be suitable for living.The newly discovered planets are located right in the middle of the habitable zone.
"We have planets on both sides of the habitable area --One is too hot, one is too coldNow we have one right among us, "said Professor Vogt