John M. Grunsfeld : (2)

" We don’t know how many planets we’re going to have to examine before we find life, and not finding it on 10 or 100 doesn’t mean it’s not there. This may be very tricky. " - John M. Grunsfeld

" Hubble uniquely has been able to look in the atmosphere of a planet orbiting a nearby star and figure out what’s in that atmosphere. " - John M. Grunsfeld