I wonder, for a planet so (relatively) close to our own star system, what kind of- How big would a telescope have to be in order to detect an earth-sized planet by direct observation in the Alpha Centauri system?
I'm just thinking. This is awesome and all, but that planet is obviously roasty-toasty in a way that Venus could only dream about. That close to its primary, I wonder if it would even have an atmosphere at all, or if would have been boiled away by a) heat and b) blasted off by the solar wind? This is an awesome find and I do not want to diminish that in any way, but the technique used to detect this planet was pushed damn close to the limit. If there were an earth-sized planet in the habitable zone, would there be a way to detect it other than direct observation?
Also wondering if having Alpha Centauri A so nearby could serve the same function as Jupiter does in our own system for clearing out potential meteors, or is the separation too great?