Can a binary star's planet host lifeforms?

"A strange new planet has been found circling two stars at a right angle — like something out of sci-fi. It’s the first solid evidence of a so-called polar orbit around a binary system. Credit: SciTechDaily.com" (ScitechDaily, Planet Found Orbiting Two Stars at a Perfect 90-Degree Angle)

The polar planet that orbits the binary star at a 90-degree angle can host life. There is only one of those polar exoplanets known. That planet orbits two brown dwarfs. So it will not host lifeforms. But it tells that the polar exoplanets exist. 

There is the possibility that if the planet orbits the binary star at a perfect 90-degree angle to the star's layer. That thing makes it possible that there are lifeforms on that planet. The binary stars are quite complicated things. And if the planet's orbital angle is perfect conditions on that planet can be stable. That can offer the harbor for life. 

The planet can also lie to the binary star. That means the binary star can be like any star. The planetary systems can form around the stars. Or the star can capture rogue planets around it. There is the model that the rogue planets are the most common planet types in the universe. Those planets can form in supernova remnants or when some cosmic shockwave travels through the small molecular clouds. 

"This is an artist’s impression of the exoplanet 2M1510 (AB) b’s unusual orbit around its host stars, a pair of brown dwarfs. The newly discovered planet has a polar orbit, which is perpendicular to the plane in which the two stars are traveling. Credit: ESO/L. Calçada" (ScitechDaily, Planet Found Orbiting Two Stars at a Perfect 90-Degree Angle)

"Using ESO’s Very Large Telescope (VLT), astronomers have found an exoplanet orbiting a pair of peculiar stars at an angle of 90 degrees. There have previously been hints that these so-called polar planets around two stars could exist, but we now have clear evidence that this is the case. This special system was found by observing the orbital path of the two stars being pushed and pulled in a way that could only be explained by the presence of a planet on a polar orbit. This video summarizes the discovery, explaining the nature of these peculiar stars and the method astronomers used to find this odd planet. Credit: ESO" (ScitechDaily, Planet Found Orbiting Two Stars at a Perfect 90-Degree Angle)

In that case, the planet axle is in the same direction as the binary star, so participants can orbit each other at close distance. 

Can act as the lone star. In that case. Those planets have night and day like on Earth. The other versions are so-called open or long-distance binary- or multiple stars. There is the possibility that both of those stars have their own planetary systems. Maybe those planets have not night at all. 

The binary star systems are more common than the lone star systems. In the 1990s most researchers thought that binary stars could not have planets because their gravity effect would destroy the protoplanet. 

Today we know. Also, binary stars have planets. The fact is that almost every red dwarf that we know has exoplanet systems. So, we can expand that model to other stars. That means that almost all stars should have planetary systems. Things like Barnard star's planetary systems tell us that the smallest red dwarfs can have multiple planets around them. Barnard's star is roughly larger than Jupiter's. And it has four planets.

https://scitechdaily.com/planet-found-orbiting-two-stars-at-a-perfect-90-degree-angle/

https://scitechdaily.com/a-century-old-cosmic-mystery-solved-four-hidden-planets-found-near-earth/