Space Science, Space Technology and the Space Station
The space-station program will seriously diminish the opportunities for advancing space science and technology if it proceeds as planned. Most national goals in space are better realized by robot spacecraft
Interplanetary Particles and Fields
A "wind" of charged particles blows out from the sun, punctuated by energetic bursts. These particles interact with the magnetic fields of the planets in intricate ways
Radiation Belts around the Earth
Instruments borne aloft by artificial satellites and lunar probes indicate that our planet is encircled by two zones of high-energy particles, against which space travelers will have to be shielded
The Artificial Satellite as a Research Instrument
Its payload of 10 pounds will telemeter information about conditions at the edge of space. When its batteries have run down, we can still learn much by observing its flight