Is Something Out There?
Abstract
- Publication:
-
Air and Space
- Pub Date:
- 1993
- Bibcode:
- 1993AirSp...8...46K
- Keywords:
-
- PLANET X;
- POPULAR;
- ORBITS;
- PERTURBATIONS;
- ANOMALIES;
- TECHNICAL ASPECTS;
- THEORETICAL STUDIES;
- SATELLITE OBSERVATIONS;
- EARTH-BASED OBSERVATIONS;
- PARAMETERS;
- Planets