Editing Planetary Observer program (section)

=== ''Lunar Observer'' ===
The ''Lunar Observer'' program was started with an estimated budget of US$500–700 million. The proposed orbit was {{Convert|70|km|abbr=on}} above the surface. The ''Lunar Observer'' spacecraft garnered some attention from the Soviet Union, and there was a suggestion that they might cooperate with NASA to field some instruments for it.<ref>{{Cite news |url=https://www.deseret.com/1990/2/25/18849962/2-satellites-to-orbit-moon-in-96-u-physicist-says/ |first=Bruce |last=Hills |title=2 Satellites to Orbit Moon in '96, U. physicist says |work=The Deseret News |date=February 25, 1990 |page=A1}}</ref>

''Lunar Observer'' was proposed for FY1991 at US$188 million by President George H.W. Bush.<ref>{{Cite news |url=https://www.deseret.com/1990/5/12/18861173/mars-expedition-tab-may-be-astronomical/ |first=Harry F. |last=Rosenthal |title=Mars Expedition Tab May Be Astronomical |agency=Associated Press |publisher=The Deseret News |date=May 12, 1990}}</ref>