Skytour Radio Presents: Planetary Nebula- The End for Our Sun
Sunday, May 13th, 2018
Tonight Up first in the roundup is the planet GJ132b, a planet orbiting a cool M class star (GJ1132). The planet orbits the star a mere .015 AU or just 1,395,000 miles distant. The planet is by no means habitable for life as we know it, but the star is only 39 light years from our own, so it stands to reason that this close, the planet’s atmosphere if any can be seen and “sniffed” so to speak by sensitive instruments designed to detect the atmospheric contents. If the planet has an atmosphere then it would be very important as it would show that other planets around such M type stars might also have atmospheres. This finding if true would open the pathway to finding life capable planets with atmospheres as well.
Next on the roundup is the planet . The “C” tells us that this star, 667 has three components, A,B, and C and it is star C in the trio that hosts a planet. This system has several potential planets and this one, c, is actually right in the habitable zone for this tiny star. The planet hosting star 667C, is an M1.5 hydrogen fusing dwarf star, and is a very common type. Stars A and B are K type stars, just slightly cooler than our Sun and are some distance away from star C. What is really interesting is that this system almost exactly mimic another famous system most people already know: Alpha Centauri. Alpha Centauri is also a triple star system with the A and B components being G type stars like our Sun and Proxima also being an M type dwarf… Proxima b however is not in the habitable zone as is 667C c.
Tonight we talk about Planetary Nebulae! These are the remnants left behind of a star more or less like our own Sun but in its death throes We have a few billion years yet before the Sun enters such an end state but once it does, we too will have a planetary nebula right here in our Solar System. Actually it will extend out about 1 light year as these nebulae will usually extend out about that far.
Planetary Nebulae are the dying remnants of a once powerful star, that in death, expels much of itself back to the interstellar medium thus seeding a new generation of stars and perhaps even planets elsewhere in the Universe.
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