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A new study by UK scientists has backed theories on life in outer space by finding there could be up to 36 intelligent alien races in our galaxy.
Researchers from the University of Nottingham calculated there could be dozens of other extra terrestrial civilisations within the Milky Way.
But because the average distance to such worlds would be 17,000 light-years, communication and detection would be "very difficult" from Earth with current technology.
The study estimated the number of intelligent communicating civilisations within our own galaxy by assuming that intelligent life develops on other planets in a similar way to Earth.
Artist's concept of a nearby civilisation signalling Earth after observing our planet crossing in front of the sun.(UC Berkeley image courtesy of Breakthrough Listen) (Supplied)
"There should be at least a few dozen active civilisations in our galaxy, under the assumption that it takes five billion years for intelligent life to form on other planets, as on Earth," lead researcher Christopher Conselice said.
The research reveals that the number of extra-terrestrial worlds depends on how long they are actively sending out signals into space, such as radio transmissions from satellites and television.
If other technological civilisations survive as long as ours, which is 100 years old, then there will be about 36 ongoing intelligent technical life forms in the Milky Way, the study found.
UoN Press Office@UoNPressOffice
Is there anyone out there? - New research calculates there could be more than 30 intelligent civilizations throughout our Galaxy @conselice @UoN_Physics @UoNScience @UoNresearch https://tinyurl.com/y78p6m7l
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8:28 PM - Jun 15, 2020
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It theorises that intelligent life forms in less than five billion years, or after about five billion years.
On Earth, a communicating civilisation formed after 4.5 billion years.
"In the strong criteria, whereby a metal content equal to that of the Sun is needed (the Sun is relatively metal rich), we calculate that there should be around 36 active civilizations in our Galaxy," first author Tom Westby said.
The diagram shows the composition of the Milky Way. (NASA)
Discovering the scale – if any – of intelligent life could offer a glimpse into the chances of Earth's existence, the study found.
If intelligent life is common, then this would reveal our civilisation could exist for much longer than a few hundred years.
But, if there are no active civilisations in our galaxy then it is a bad sign for our planet's long-term survival.
The study is published in The Astrophysical Journal.
https://www.9news.com.au/world/milk...ace-news/0fcda685-9e95-4f22-98a0-4937e4514f64
Researchers from the University of Nottingham calculated there could be dozens of other extra terrestrial civilisations within the Milky Way.
But because the average distance to such worlds would be 17,000 light-years, communication and detection would be "very difficult" from Earth with current technology.
The study estimated the number of intelligent communicating civilisations within our own galaxy by assuming that intelligent life develops on other planets in a similar way to Earth.
Artist's concept of a nearby civilisation signalling Earth after observing our planet crossing in front of the sun.(UC Berkeley image courtesy of Breakthrough Listen) (Supplied)
"There should be at least a few dozen active civilisations in our galaxy, under the assumption that it takes five billion years for intelligent life to form on other planets, as on Earth," lead researcher Christopher Conselice said.
The research reveals that the number of extra-terrestrial worlds depends on how long they are actively sending out signals into space, such as radio transmissions from satellites and television.
If other technological civilisations survive as long as ours, which is 100 years old, then there will be about 36 ongoing intelligent technical life forms in the Milky Way, the study found.
UoN Press Office@UoNPressOffice
Is there anyone out there? - New research calculates there could be more than 30 intelligent civilizations throughout our Galaxy @conselice @UoN_Physics @UoNScience @UoNresearch https://tinyurl.com/y78p6m7l
47
8:28 PM - Jun 15, 2020
Twitter Ads info and privacy
28 people are talking about this
It theorises that intelligent life forms in less than five billion years, or after about five billion years.
On Earth, a communicating civilisation formed after 4.5 billion years.
"In the strong criteria, whereby a metal content equal to that of the Sun is needed (the Sun is relatively metal rich), we calculate that there should be around 36 active civilizations in our Galaxy," first author Tom Westby said.
The diagram shows the composition of the Milky Way. (NASA)
Discovering the scale – if any – of intelligent life could offer a glimpse into the chances of Earth's existence, the study found.
If intelligent life is common, then this would reveal our civilisation could exist for much longer than a few hundred years.
But, if there are no active civilisations in our galaxy then it is a bad sign for our planet's long-term survival.
The study is published in The Astrophysical Journal.
https://www.9news.com.au/world/milk...ace-news/0fcda685-9e95-4f22-98a0-4937e4514f64
