Nasa's Small Explorer Program
- 1 December 1991
- journal article
- research article
- Published by AIP Publishing in Physics Today
- Vol. 44 (12), 44-51
- https://doi.org/10.1063/1.881278
Abstract
Substantial publicity surrounds NASA's major scientific space missions. The Voyager interplanetary probes enthralled the public as they swept past the outer planets. The Hubble Space Telescope continues to attract great attention because of its ambitious objectives and large cost as well as its technical difficulties. NASA's deep space missions, such as Pioneer, Viking, Magellan, Galileo and Ulysses, and its “moderate” missions such as the Cosmic Background Explorer are further examples of large, longterm projects. Near‐Earth spacecraft like the recently launched Gamma Ray Observatory and the many satellites of the planned International Solar Terrestrial Physics program also cost hundreds of millions of dollars. Indeed, with the attention given to programs involving humans in space—Space Station Freedom and the Manned Mission to Mars, for example—it might appear that NASA has only “big ticket” space missions.Keywords
This publication has 2 references indexed in Scilit:
- Precipitating relativistic electrons: Their long‐term effect on stratospheric odd nitrogen levelsPublished by American Geophysical Union (AGU) ,1991
- An Interpretation of the Observed Oxygen and Nitrogen Enhancements in Low-Energy Cosmic RaysThe Astrophysical Journal, 1974