The IAU has designated "Makemake" a dwarf planet, with Ceres, Eris and Pluto, that brings the total to
four. Makemake (pronounced MAH-kay MAH-kay) is named for the Easter Island creator of humanity.

10:15 PM, 6/19/08, Update: Ice indirectly confirmed at Phoenix landing site

Scientists examining photographs from the Mars Phoenix lander say the disappearance of clumps of material in a trench dug by the spacecraft's robot arm provides convincing evidence of exposed ice that subsequently vaporized. The robot arm, meanwhile, digging a nearby trench, ran into a hard layer of material that scientists believe may be a subsurface layer of ice at the same depth where the now-vanished chunks were uncovered.

Looks like there's some good passes of the Space Station happening, including a nice evening pass next Thursday around 9:30pm:http://tinyurl.com/4x6hsh 

C/2007 W1 (Boattini):  

Keep an eye on this comet - it may reach 6th magnitude or better during early evening hours in late May before it gets too close to the Sun. See: http://cfa-www.harvard.edu/iau/Ephemerides/Comets/2007W1.html 

Looks like it'll actually get quite close to Earth but unfortuantely will be in the daytime sky at that point and so not viewable. :-(