Could telescopes eventually clearly show extra-solar planets?
Wednesday, September 30th, 2009The further away objects are, the more difficult they are to see: My understanding of why this is so, is that less light from them reaches us. And/or that the light from them diverges, so you need a lens bring the object into focus.
My understanding of telescopes is that they have large lenses that improve focus, and more light-sensitive digital sensors that discern very faint objects. And positioning them in space avoids interference from the Earth’s atmosphere.
Since both lenses and light-sensors are continually improving, is it plausible that we will eventually have telescopes that allow us to view planets 100s of light years away as clearly as those in our own solar system? Or is there a physical limit to how much we could improve telescopes?
i think the day will come when we build a ‘Hubble’ type observatory on the moon…
and i suppose there is a limit, but we are a long way from that limit
