Thursday, September 03, 2009

THE ARGO MISSION... I could’ve sworn I already posted a Blog on this, but oh well. Back in November of last year, an article was posted on The Planetary Society’s website about a NASA mission that was being proposed by scientists to fly past the planet Neptune by 2029 and then head onwards to the Kuiper Belt. Known as Argo, this mission would be similar to that of New Horizons in that the Argo spacecraft would pretty much utilize the same design as the Pluto-bound probe, use Jupiter (and Saturn) for a gravity assist, head towards Neptune to study it, its (captured) moon Triton and other Neptunian satellites before flying past a Kuiper Belt Object (KBO) or two and then departing our solar system.

An artist's concept showing the New Horizons spacecraft soaring past Pluto.
NASA / APL

Like New Horizons, Argo would be classed as a ‘New Frontiers’ mission if approved during NASA’s fourth Announcement of Opportunity (AO) for the program in 2013. The Argo project could’ve been submitted this year (for NASA’s third AO; New Horizons was selected in the first AO in 2001, and a mission called Juno was picked during the second AO in 2005), but the flight relies on being powered by a nuclear generator using plutonium-238 fuel...which is on low supply right now and would not be available again till maybe 2014 (when funding on Argo would start if it was greenlit). The U.S. Department of Energy is now restarting its program to make plutonium-238 for future NASA deep space missions. In terms of NASA’s third AO, the winning finalist will be selected in Fall of 2010, with the mission launching no earlier than 2015 and no later than 2018. Juno is the next New Frontiers mission that is officially scheduled for lift-off in August of 2011, and will arrive at Jupiter in 2016.

An artist's concept showing the Juno spacecraft approaching Jupiter.
NASA / JPL

If Argo was approved by NASA, its first launch window would come in February of 2019...with it flying past Jupiter in June of 2020 and Saturn in February of 2022 for gravity assists, reaching Neptune in June of 2028 and heading towards its first KBO (speaking of which, Triton may be one that was captured by Neptune's immense gravity earlier in its past) in May of 2032. Another option involves Argo launching in February of 2019, flying past Jupiter in June of 2020 and Saturn in April of 2022, reaching Neptune in April of 2029 and approaching a KBO in March of 2034. Do the math, and you’ll see that the first launch option involves a 9.3-year flight, while the second option involves a 10.2-year flight. I think you can guess which travel time the project’s scientists would prefer.

An artist's concept of the Neptunian system.
Craig Agnor, Steve Albers, Jerry Gardner, James Hastings-Trew, Constantine Thomas, and NOAA's Science on a
Sphere
project


With all that background information aside, I think you can also guess why I typed this Blog about Argo. Not to sound like a broken record (again and again and again...), but this is INDEED my next chance to have my name fly out of the solar system onboard an unmanned space probe. I really shouldn’t get my hopes up for this flight to be selected in 2013...since I was hoping like hell that NASA would move forward with the New Horizons 2 mission a few years ago. NH 2 would’ve been launched between 2008 and 2009, and arrive at Uranus by 2017. Unfortunately, a lack of plutonium fuel and low priority placed on the mission by scientists was what prevented NH2 from ever taking off. I would TOTALLY be ecstatic if Argo was given a ‘Go’ by NASA. Of course, if you clicked on that last link that was provided in this paragraph, you'd already assume that.

The Argo spacecraft flies past Neptune and its moon Triton, which may be a captured Kuiper Belt Object.
NASA / APL & JPL / McParno

No comments:

Post a Comment