The Next Frontiers in Space

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Editor's Note: This commentary from James Wray first appeared on the Georgia Tech News Center.

A new report, written by The Planetary Society, says the clock is ticking for exploration on Mars. Quickly. As the group notes, NASA only has one mission in development for the Red Planet — the Mars 2020 Rover. More is needed, according to the Society, particularly an updated orbiter and a rover that can land and retrieve samples dug up by the 2020 robot. 

James Wray in the School of Earth and Atmospheric Sciences reacts to the new report. Wray is a science team member on most of NASA and the European Space Agency’s missions currently active on Mars.

I’m excited and re-energized by our President’s support of planetary exploration, from his inaugural address to his proposal of an all-time record(!) budget for NASA’s Planetary Science Division. The proposed funding will enable the long-overdue launch of a robust program to explore ocean worlds in the outer solar system, beginning with Jupiter’s most fascinating moon, Europa. For far too long, NASA has obeyed Arthur C. Clarke’s fictional admonishment on Europa in his 2010: Odyssey Two: “Attempt no landings there.” And yet, we must! And, someday soon, we will.

NASA’s budding ocean worlds program can benefit from many lessons — mostly positive, and perhaps a few negative — from its extremely productive Mars Exploration Program. I can directly attest to the synergies enabled by a well-integrated series of orbital and surface missions. Maintaining this degree of complementarity requires careful planning, and (as The Planetary Society notes) the time is nigh for action to ensure that our expanded exploration of the outer solar system does not leave our samples — and our science — stranded at Mars. We do not want NASA’s next (sample-caching) rover to be nicknamed “Watney.

Two years ago, I coauthored a NASA-solicited report on the objectives that a new Mars orbiter could address in the early 2020s. Such a robotic mission not only could follow up on new evidence for modern liquid flows on Mars, but also represents one way to fulfill the scientific community’s consensus top priority for Mars exploration in this decade:  returning carefully selected samples from the surface of Mars. But there’s another way to achieve this. As Neil Armstrong and Buzz Aldrin did for the moon, human astronauts could return the first samples from Mars, whether via their own geological survey of the planet or by retrieving samples robotically cached prior to their arrival. And therein lies perhaps the biggest question for NASA’s near future: how soon will astronauts be visiting Mars?

To answer this question, I am eagerly awaiting the President’s appointment of a new NASA Administrator. The agency has embarked on a multi-decade journey to Mars, requiring still much new technology development. But the President has argued for a more accelerated timeline, and if Apollo is any guide, then the proper funding and focus can make anything possible. New leadership at NASA should be empowered to balance these visions and pursue a synergistic robotic-and-human program of exploration, taking full advantage of the unprecedented international interest in Mars. Half a dozen different government agencies and at least one private company are planning missions there in the next few years. NASA has provided an undisputed head start, representing the only nation thus far to safely land on and return science from the Red Planet (seven times!). Ad astra per Mars!


  • Workflow Status:Published
  • Created By:A. Maureen Rouhi
  • Created:06/08/2017
  • Modified By:A. Maureen Rouhi
  • Modified:06/28/2017