Join Donate

Casey DreierFebruary 8, 2016

What Does a 'Good' Budget for Planetary Science Look Like?

How to evaluate the coming 2017 budget request and projections

One of the first things I will look for after tomorrow’s release of the 2017 budget proposal for NASA will be the budget for the Planetary Science Division. This part of NASA supports all robotic exploration of the solar system (and is the single source of research funding for planetary scientists).

Many of you know the story. Starting in 2013—and occurring every year thereafter—the White House proposed significant cuts to planetary science. The Planetary Society and our members fought these cuts year after year. Each year Congress rejected most or all of these cuts, fortunately, and we’ve seen the White House get closer to our recommended level of $1.5 billion per year for a healthy, balanced planetary program at NASA.

In that sense, a planetary budget of at least $1.5 billion in the 2017 request would be “good.” But that’s not the only metric. Even though we’ve likely passed the worst of the planetary budget crisis, the program needs to rebuild. There is the Mars 2020 mission, the Europa Multiple-flyby mission with a possible lander, and new small- and medium-class missions all planned to launch in the early 2020s. The next five years must be spent building these missions, and I’ll be looking for this to be accounted for within the five-year budget projections included in the President’s Budget Request.

But what would a good five-year projection look like? My colleague, Jason Callahan, took a stab at this and put together the following budget projection based on public data from last year’s budget request.

Planetary Science Budget Projections for a Balanced Program (pre-FY2017 budget)

Jason Callahan / The Planetary Society

Planetary Science Budget Projections for a Balanced Program (pre-FY2017 budget)
Funding projections for a balanced program of planetary science and a Europa mission in 2023.

This projection assumes:

I should strongly emphasize that we used highly idealized cost development curves and best-case development timelines and funding practices. But this does give us a rough sense of where the budget needs to go: to $2 billion by the end of the decade. It also shows us that anything less than $1.48 billion in 2017 would likely be disruptive to the program.

We will update this article once we see the President’s budget request on Tuesday.

Read more: Space Policy, Decadal Survey, Future Robotic Missions, FY2017 NASA Budget

You are here:
Casey Profile Picture Thumbnail
Casey Dreier

Chief Advocate & Senior Space Policy Adviser for The Planetary Society
Read more articles by Casey Dreier

Comments & Sharing
Bill Nye and people
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

The Planetary Fund

Help advance robotic and human space exploration, defend our planet, and search for life.


"We're changing the world. Are you in?"
- CEO Bill Nye

Sign Up for Email Updates