Carnival of space 32 is up at robot guy
My entry was on my favorite proposed launch systems
Bad Astronomy talks about using Mass as a verb
Colony worlds talks about energy in space from space solar and helium 3
Space files mentions that the Planetary Society has raised $250,000 for a second space sail
Centauri Dreams talks about young stars and old planets
Note: My wife and I just had our second child. So posts are light this week.