Here are two items demonstrating that, sometimes, "less is more."

But the one Mayor announced yesterday at a European science conference ranks as the lowest-mass planet yet found circling a normal star. Designated Gliese 581 e, it tips the cosmic scales somewhere between 1.9 and 3 Earth masses — the uncertainty comes from not knowing how the orbit is angled to our line of sight.
And while this world might very well have a rocky composition, it's not a very habitable place. It circles just 0.03 astronomical unit (3 million miles) from its parent star, taking only 3.15 days to go around. So even though Gliese 581 is a relatively dim M dwarf, the newfound planet is far too hot to be habitable.

It took the observers four years to amass enough observations at La Silla Observatory in Chile to confirm the existence of Gliese 581 e. As he notes in a press release, "It's amazing to see how far we have come since we discovered the first exoplanet around a normal star in 1995." (The release erroneously trumpets that this is the "lightest exoplanet yet discovered" — that title actually belongs to a tiny cinder orbiting the rapidly spinning neutron star PSR 1257+12.)

Each less than 10 times the mass of Jupiter, the objects are probably too small to be brown dwarfs. Burgess estimates that their temperature is only 1100° to 1300° F (900° to 1000° C). Yet they're floating freely, not bound to any star, so they're not planets. (According to a definition for large exoplanets adopted by an International Astronomical Union group in 2003, they're technically called "sub-brown dwarfs".)
Whatever you want to call them, these remarkable finds should help astronomers understand the wide range of objects — from minuscule dwarfs to high-mass superstars — that coalesce in star-forming regions.
Burgess announced the discovery today during the European Week of Astronomy and Space Science gathering in England. A press release is here.
“…a trio of astronomers have identified a trio of bantamweight dwarfs in the star-forming region IC 348…” Looking at the image, I only see two.
If this Neptune size planet orbiting in habitable zone could have a Titan’size moon, this moon could be what it isn’t his mother planet: a life forming “rock” .
Question is:
is possible to detect such moon? Or it will be for the future Webb space telescope ?
Thank you, Stefano.