How Many Earth-Like Planets Are Around Sun-Like Stars?

Jan 2016
57,388
54,172
Colorado
#1
We are learning more! And it seems that such planets may be quite common!

How many Earth-like planets are around sun-like stars?

Key paragraph:

Based on their simulations, the researchers estimate that planets very close to Earth in size, from three-quarters to one-and-a-half times the size of earth, with orbital periods ranging from 237 to 500 days, occur around approximately one in four stars. Importantly, their model quantifies the uncertainty in that estimate. They recommend that future planet-finding missions plan for a true rate that ranges from as low about one planet for every 33 stars to as high as nearly one planet for every two stars.

Much more at the link....
 
Apr 2010
20,442
24,176
Oregon
#2
It would be impossible to count.

It’s crazy just how small our little planet is in our solar system and how small our little solar system is in our galaxy and how small our galaxy is in our universe

Each of these is a galaxy with countless stars and countless solar system and countless planets.

Space is amazing
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Mar 2019
8,391
2,947
California
#4
We are learning more! And it seems that such planets may be quite common!

How many Earth-like planets are around sun-like stars?

Key paragraph:

Based on their simulations, the researchers estimate that planets very close to Earth in size, from three-quarters to one-and-a-half times the size of earth, with orbital periods ranging from 237 to 500 days, occur around approximately one in four stars. Importantly, their model quantifies the uncertainty in that estimate. They recommend that future planet-finding missions plan for a true rate that ranges from as low about one planet for every 33 stars to as high as nearly one planet for every two stars.

Much more at the link....
Be a bit of a sticky wicket getting there. Would need a Fusion Reactor and a new theory of Relativity.
 
Apr 2010
20,442
24,176
Oregon
#5
there are probably millions of civilizations more or less like ours, where living things have evolved into consciousness.
How narcissistic is it to think that out of trillions and trillions of planets around countless stars that we are the only planet with sentient beings.

C’mon. No way people
 
Likes: Ian Jeffrey
Mar 2019
8,391
2,947
California
#7
yeah, that's why fermi's paradox doesn't really bother me that much.
Well ,according to theory ,it would take about 300 days to reach Light Speed at 1G acceleration. It might SEEM like a quick trip to Tau Ceti , but many years would really pass on Earth. According to theory ,of course.
 
Jan 2016
57,388
54,172
Colorado
#10

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