It's time to start future-proofing any space stocks in your portfolio. "Smaller, faster, cheaper" may be a better way to invest.Good news for Lockheed Martin (LMT -0.01%) investors: Last week, Lockheed announced a large follow-on order for government weather satellites. The National Oceanic and Atmospheric Administration (NOAA) asked the aerospace and defense giant to build it at least three, and potentially as many as seven, new next-generation Geostationary Extended Observations (GeoXO) sats. If all optio ...