by Jeff Foust —
WASHINGTON — As NASA gears up a 10 years-extended effort to return samples from Mars, some scientists are worried that the marketing campaign might not leave any funding offered for other robotic missions to the planet.
The only foreseeable future NASA mission to Mars beneath development is Mars 2020, a rover now in the ultimate stages of assembly and scheduled to launch in July 2020. The rover, centered on the Curiosity rover that has been on Mars for 7 years, will cache Martian rock and soil samples for later return to Earth.
Although NASA has not formally fully commited to the added missions necessary to retrieve the samples and return them to Earth, each NASA and the European Area Company have began planning for them. That tactic incorporates a NASA-led mission to land on Mars, fetch the samples and start them into orbit around the planet, and an ESA-led mission to get the sample container in orbit and return it to Earth. Both equally missions would launch in 2026, returning the samples in 2031.
But as attendees of a assembly past month of the Mars Exploration Application Analysis Team (MEPAG) in Pasadena, California, mentioned, there are virtually no other Mars robotic missions currently being made. The only exception is Escape and Plasma Acceleration and Dynamics Explorers (EscaPADE), a proposed smallsat mission to examine the conversation of the photo voltaic wind with the Martian atmosphere that NASA picked in June as element of a new planetary science smallsat software. NASA is funding further more scientific studies of EscaPADE, but with no promise the mission will be authorized for improvement and start.
That is led to fears that Mars sample return is pushing out other study that experts want to perform at Mars. “Our highest precedence is Mars sample return, but we have other priorities as effectively,” said R. Aileen Yingst, chair of MEPAG, in responses at the beginning of the group’s July 26 assembly. “We must tackle exceptional science inquiries in parallel with, or as section of, sample return. Appropriate now, there are no flight opportunities that look ahead in that way.”
She observed that in addition to a deficiency of flagship-course Mars missions like Mars 2020, researchers can’t suggest medium-sized New Frontiers missions because these types of missions, even though competed, are constrained to only a handful of chosen locations that, for now, excludes Mars. The smaller sized Discovery software, which also selects missions in a competition, can be made use of for Mars mission, like the Perception lander. Having said that, she explained, “it is problematic to get to Mars underneath the Discovery value cap.”
“There is some issue in the community that new info may perhaps not be forthcoming any time before long,” she concluded.
Later on in the assembly, experts asked NASA officials in attendance about selections to tackle this, such as traveling supplemental science devices on the sample return lander and orbiter missions launching in 2026.
Jim Watzin, director of NASA’s Mars Exploration System, said NASA did take into account flying added science payloads on these missions early in their growth. Having said that, he argued that did not match into the “lean” Mars sample return architecture introduced approximately two many years back by Thomas Zurbuchen, NASA affiliate administration for science, which seeks to complete sample return as swiftly and as inexpensively as probable.
“That was the correct decision,” he explained. Those sample return missions deal with “very, pretty extreme propulsive demands” to get to Mars and again. “Every time I include an excess kilogram of mass to that, it makes the issue tougher and more difficult to employ.”
Some requested about one more orbiter to deal with communications with the surface and other roles, this kind of as imaging, supplied the age of current orbiters. Watzin mentioned that launching the other two elements of the sample return marketing campaign in 2026 usually means there is a “reasonable probability” that present orbiters will nonetheless be ready to function at minimum as communications relays.
As for an orbiter to do science, Watzin was a lot more pessimistic. “Unfortunately we are living in a globe with limited budgets,” he reported, acknowledging the need for a have to have for a new distant sensing mission to support science and, potentially, future human exploration.
“Do I have a program nowadays? No,” he claimed about a new orbiter.