  We show that a wide-field Kepler-like satellite in Solar orbit could obtain
microlens parallaxes for several thousand events per year that are identified
from the ground, yielding masses and distances for several dozen planetary
events. This is roughly an order of magnitude larger than previously-considered
narrow-angle designs. Such a satellite would, in addition, roughly double the
number of planet detections (and mass/distance determinations). It would also
yield a trove of brown-dwarf binaries with masses, and distances and
(frequently) full orbits, enable new probes of the stellar mass function,
identify isolated black-hole candidates. We show that the actual Kepler
satellite, even with degraded pointing, can demonstrate these capabilities and
make substantial initial inroads into the science potential. We discuss several
"Deltas" to the Kepler satellite aimed at optimizing microlens parallax
capabilities. Most of these would reduce costs. The wide-angle approach
advocated here has only recently become superior to the old narrow-angle
approach, due to the much larger number of ground-based microlensing events now
being discovered.

Earth and Planetary Astrophysics