title: Solar system exploration. Planetary science is busting budgets.
authors: Richard A
authors: RA
authors: Kerr
mesh_terms: D018480:Astronauts; D002017:Budgets; D005118:Extraterrestrial Environment; D018535:Mars; D013026:Space Flight / Q000191:economics*; D018531:Spacecraft; D014481:United States; D018557:United States National Aeronautics and Space Administration / Q000191:economics