Two Suns Could Boost Odds of Habitabl...

Two Suns Could Boost Odds of Habitable 'Exomoons'

There are 2 comments on the Space.com story from Apr 28, 2014, titled Two Suns Could Boost Odds of Habitable 'Exomoons'. In it, Space.com reports that:

The habitable zones of single stars are larger and wider as the temperatures increase.

Join the discussion below, or Read more at Space.com.

“Geologist [I'm Climate Change]”

Since: Mar 07

formerly Nuneaton

#1 Apr 30, 2014
Interesting theory but has a major flaw not mentioned in the article.

A close binary star with planets orbiting at distance orbits the sum mass of both stars, ie. a double sun will be 2* as luminous but also 2* as massive. The result is the increase in orbita speed of the planets and an increase in tidal forces acting on them.

A planet will have more chance of exomoons around a single star as a result of lower tidal forces in the lifezone, & more chances of exomoons around a more massive star (F type) as a result of a bigger lifezone & lower sum tidal forces.

One other problem exists with planets around a binary, & this is a big one. The tidal forces acting on the planet will bump the planet outward while simultaneously bump the 2 stars inward. During the evolution of the (3 body simplest system) system the planet drifts outward through the lifezone & cools. In the Solar system Earth would eventually become a snowball & Venus becomes dry & habitable (tatooine). The culmination of the process is the merger of the 2 central stars @ which point the blue straggler fries the planets formerly in the lifezone.

Have a nice day: Ag
Poop News

Houston, TX

#2 May 7, 2014
Two Turds Could Boost Odds of Habitable 'Moons'

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