Exploration: January 2015 Archives

Asteroid Abduction

The Space Program - A Modest Proposal, Paul Spudis

"I'm at a loss to explain why one aspect of the ARM mission hasn't been discussed in the media: seeing that advocates of the ARM think nothing about re-arranging the architecture of the Solar System for their convenience, environmental activists might object to the very idea behind the mission. We can't get to a near-Earth asteroid with the Orion spacecraft and the Space Launch System (SLS), so let's just drag the asteroid to us! Imagine a defenseless rock, innocently tumbling its way through space, only to be snagged, bagged, and defiled appropriated and exploited by arrogant, human interlopers. There ought to be a law!"

The Debate About The Future Of Human Spaceflight - 30 Years On, Marcia Smith, Aviation Week

"Will NASA's newest plans languish as well, or are we finally ready to move out on the next phase of human exploration? Can we avoid diversions like the Asteroid Redirect Mission? Will Congress sustain the level of funding it provided for NASA in FY2015 -- $549 million more than the President requested? Is that enough to make real progress? The "Journey to Mars" hype associated with the Orion test last month seems to have been effective in educating the public that NASA has not, in fact, gone out of business, but won't the public wonder what happened when this year and next year and the year after that pass with no more Orion flights?"

- Yet Another Space Policy Advisory Committee, earlier post
- Yet Another Slow Motion Advisory Committee on Human Space Flight, earlier post
- Yet Another NASA Pick-the-Next-Destination Effort, earlier post
- Bolden: NASA Does Not Have To Actually Go To An Asteroid, earlier post

Redirecting Asteroid Not Top Objective of Asteroid Redirect Mission, NASA Official Says, Space News

"After a presentation in Phoenix to the NASA-chartered Small Bodies Assessment Group (SBAG), Lindley Johnson, head of the agency's Near Earth Object Observations Program, said redirecting an asteroid to a distant retrograde orbit around the Moon is "not the top objective of the [ARM] mission," which was trotted out in spring 2013 as a means to road test technology needed for a crewed Mars expedition and provide -- in the form of the titular asteroid -- a near-term destination for the Space Launch System rocket and Orion crew capsule NASA is building."

Bolden's Confusing Asteroid Mission Rationale (Revised), earlier post

"And this is subtle. I have this discussion with my science friends all the time and those who are purist. The president said by 2025 we should send humans to an asteroid. What he meant was, you should send humans to somewhere between Mars and Saturn, because that's where the dominant asteroids in the asteroid belt are. But no, he didn't say that. He said: humans to an asteroid."

- NASA: Two SLS Launches Likely Needed For $3 billion+ ARM, earlier post
- Asteroid Redirect Mission Critique
- Congress, NAC, SBAG, Question Asteroid Mission, earlier post
- Report of the Small Bodies Assessment Group Asteroid Redirect Mission Special Action Team, 30 July 2014 (Draft), earlier post
- SBAG Asteroid Redirect Mission Special Action Team, July 2014 presentation, earlier post
- Asteroid Experts Are Not Very Fond of NASA's Asteroid Mission, earlier post

Keith's note: At today's Small Bodies Assessment Group (SBAG) telecon, I asked Lindley Johnson via Webex "Can you show the chart again that has SLS as a launch option for the ARM spacecraft? Does this mean TWO SLS launches needed - one for ARM and another for crew?" He confirmed that yes, there will be two SLS launches - one SLS for the ARM spacecraft (Delta IV seems less desirable) and the other SLS for the crew. So ... this $1.25 billion cap for the ARM mission ignores the $1 billion-plus cost of a SLS for the ARM spacecraft, and the $1 billion-plus cost of SLS/Orion. So ... we're looking at a $3-4 billion cost for the whole ARM effort.

Keith's update: Johnson's charts are now online here. Pages 14-17 make explicit mention of SLS as a candidate for both the ARM spacecraft and the crewed launch. In the past, when asked if SLS is a candidate for the ARM spacecraft, HEOMD AA Bill Gerstenmaier has always said "no". Clearly there has been a change of mind.

One thing to consider: NASA is supposed to consider commercial launch alternatives unless there are compelling performance or technical reasons not to. Delta IV is mentioned, but no consideration seems to have been given to Falcon Heavy or the new Atlas that has been proposed. Of course, you can expect NASA to tweak things such that only SLS can meet the requirements because they have to.

51 U.S. Code ยง 50131 - "Requirement to procure commercial space transportation services" (full text below)

Asteroidal Confusion

This Week in Space - January 5-11, 2015, SpaceRef Business

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Video: Shoot For The Moon



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This page is an archive of entries in the Exploration category from January 2015.

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