Dragon/F9 Terminal Launch Count Abort

Launch at 0455 EDT May 19 was scrubbed due to an abort just after ignition in the last seconds of the countdown. SpaceX spokesman at Hawthorne, CA confirmed within a few moments of the abort that because the May 19 launch window is an instantaneous launch window, they are scrubbed for the day. A graphic on the SpaceX feed indicated the next window is on May 22.

This is very slightly surprising since SpaceX has previously demonstrated rapid turnaround of a pad abort and successful launch within a few hours of the original scheduled launch time. However, the requirements of rendezvous with the ISS are clearly such that the launch angle from Canaveral will not be correct again for approximately three days regardless what the team finds in the abort data.

Guess I can go back to bed now.

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SpaceX Dragon Update

Finally something from SpaceX: They’re readying the next Falcon9/Dragon launch as soon as 30 April. Given their pace in the past two years, this launch seems overdue. Some of the delay was surely dealing with Canaveral range scheduling. Let’s hope the team have done all the necessary engineering due diligence and have knocked out any issues likely to prevent a successful mission to the ISS.

UPDATE: Launch rescheduled for 7 May. Watched the static fire test online on 30 April, which seems to have gone without a hitch.

UPDATE2: Rescheduled on May 4th for 19 May.

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GJ 667c in the News

Along with Gleise 581, which has been a popular mainstream news topic in the last year, we now may add GJ 667c (Gleise 667C) as a point of nearby interest. A planet with mass about 4.5 times that of Earth has been detected orbiting this M2 dwarf with a 28-day period. The best news?

The planet is in the star’s estimated habitable zone.

With a mass of 4.5 times that of Earth, it’s probably not Neptune-like, so we’re looking at a rocky, terrestrial world. However, it is pretty massive, so I suspect it will have a substantial atmosphere unless its star is greatly prone to significant flares (I haven’t been able to research this yet). It would be fascinating to know if the atmosphere is thin or thick, as well as its composition, but we are likely to wait generations for instruments capable of telling us much more.

GJ 667c is 22 ly distant, a bit further than Gleise 581 (20.3 ly away).

Detection of these worlds is increasing my hope that we may soon know something about systems within 10 or 15 light years. On a somewhat related note, as of 2 Feb, four large optical telescopes at Cerra Paranal in Chile have been successfully networked to form an optical interferometer with a 130m virtual mirror.

What we’re going to be able to spot with that device absolutely tantalizes, though separation of even large planetary targets from the glow of a central star is probably still beyond this instrument.

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Grail Arriving at Lunar Orbit

Finally something to discuss close to home! The Grail satellite pair was launched back in September and has been very slowly moving toward the Moon (in an inexpensive very-non-Apollo gradual spiral). They will perform orbital insertion burns over the weekend and spend an 82-day data gathering phase, collecting extremely precise gravity measurements.

This will give us a very detailed gravity map of the Moon, which will help bolster or disprove theories of the Moon’s origin, as well as lend much greater insight into the mineral content of the surface and interior. Grail was among a series of lunar robotic missions, including LCROSS and the Lunar Reconnaissance Orbiter, that were intended as precursor data-gathering for an eventual human outpost on the Moon. The plans for the outpost have since been cancelled or put on indefinite hold, but due to NASA’s inertia, we still get the benefit of missions such as Grail that were too far along to interrupt.

Hopefully, the data it will gather will still be put to good use in enabling a future human base, which would be a great destination for our astronauts, cosmonauts, or taikonauts only a few days away from home at Apollo speeds.

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More from Kepler

Today in the news is further tantalizing stuff from the Kepler datasets: apparently the objects Kepler-20e and Kepler-20f are very nearly Earth-sized. Kepler-22b, which was also recently reported, is about 2.5 times Earth’s diameter, so still potentially quite massive depending on its composition (It could be Neptune-like, or even mostly liquid!).

This is exciting stuff, as the search for a very Earthlike planet continues. These newly reported objects are much more Earth’s size, being about 0.87 times the diameter of Earth, and the close to the same diameter, respectively, and almost certainly rocky. How do we know they’re rocky? Well, the inner one (20e) is in a 6-day orbit, and the other (20f) is in a 20-day orbit, and their sun is a G-type star like ours. For reference, Mercury, a baked rock if there ever was one, is in an 88-day orbit.

So, reality-check. These are not “Earthlike” planets, in the sense of habitable or garden-type worlds. What scientists are excited about is that we have definitively identified not “hot Jupiters” or “super-Earths”, but actual Earth-sized worlds which, unlike Kepler-22b, we can be quite sure are terrestrial.

As teams continue sifting through the Kepler data, it may well be that another Earth-sized world will be found at what is actually the right distance from its parent star to be potentially habitable. That will indeed be a very exciting find, and such a result could well come to light soon.

Too bad all the Kepler targets are so far away. Kepler-20 is more than 900 light-years distant.

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Earthlike candidate: Kepler-22b

More results from the Kepler mission continue to be processed and analyzed, and reports are hitting the mainstream media today about Kepler-22b. This object is about 2.4 times the size of Earth (mass still uncertain), and orbits a slightly cooler star than our own Sun, but at a distance of about 125 million km, resulting in an estimated temperature on its surface of 22C. For non-metric Americans, that’s 71.6 degrees Fahrenheit, folks. Short-sleeve weather.

In terms of confirming that there are worlds out there with Earthlike conditions, this is huge. It’s the closest we’ve come to finding a verifiable garden world like our own, and compared to what we’ve been excited about already, well, this is much, much better. We can be sure we will strain our remote sensing technologies to their limit, for decades and probably centuries, trying to glean more and more information about this object: Is the surface solid? What’s in the atmosphere? Is there water? What about biosignatures?

Too bad it’s 600 light-years away.

Now imagine how exciting this could have been if we had detected an object like this at Tau Ceti, or Sirius, or Alpha Centauri. There are teams working very hard right now to tease out planetary hints from doppler data on the Alpha Centauri A/B binary, but unfortunately, it’s not an easy case. I know of no teams working on other nearby stars – but I’d sure like to hear about such efforts (please comment, if you know of any)!

As great as Kepler-22b is in an abstract sense, our civilization has no serious prospects to reach that place – and it’s a for-real place – for several millenia. Give us some planetary detections, especially a garden world candidate or two, within 15 light-years, and then let’s see about starting a foundation to build us a solar sail probe or a robot orion or something worthwhile.

Meanwhile, I’m afraid terraforming Mars is a lot more practical for now.

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Dragon launch planned for Jan 2012

Back in a September post I mentioned it was likely a Dragon launch planned by SpaceX for November would be delayed, due to (Soyuz-related) problems getting a properly-trained team aboard the ISS. That has since been borne out, and today I checked the very useful resource maintained at SpaceFlight Now’s Tracking Station webpage to learn that currently the next Falcon9/Dragon launch is scheduled for 7 January 2012. This is the COTS 2 contract flight that will now apparently include both rendezvous and docking with ISS, which will be quite a big deal for SpaceX if fully successful.

Note that the page linked above is regularly updated by Spaceflight Now’s staff, and future changes in the launch schedule will be reflected there.

UPDATE: As of 20 Dec, this launch has been delayed again, to Feb 8.

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Curiosity en route

After the tremendous disappointment of Phobos-Grunt earlier this month, NASA has used the present launch window to Mars to send the long-awaited Curiosity (Mars Science Laboratory) rover on its way. This is the largest, most sophisticated rover ever sent, and if it reaches its landing site intact, Curiosity should build upon the wonderful successes of the Spirit and Opportunity rovers in delivering exciting new data about the Red Planet.

The biggest concern I have is the fact that NASA and its contractors chose to use a complex and unproven landing-delivery system, rather than proven systems used for the various prior successful landers and rovers NASA has placed on Mars. I hate the fact that such a valuable and expensive piece of engineering is intended to be placed by a sky-crane landing system, which when you think about it, seems absolutely crazy. Apparently, this approach was the “most feasible solution” to getting such a heavy rover onto the surface intact.

Well, we’ll see in about nine months. I just really hope all the huge investment in the rover and its instruments hasn’t been wasted due to mistakes in choosing or implementing its delivery engineering.

On a slightly happier note, Curiosity is powered by plutonium batteries, expected to offer power for about 14 years (i.e. plenty, for more than long enough), so there will be no concerns about dust on the solar panels this time around. Oddly, I have seen nothing whatsoever in the media about protests regarding the launch of these batteries, unlike the scene back when Cassini was launched with radioactives aboard. Perhaps the Luddites have grown up, but since we’re certainly going to need these kinds of power sources, as well as better ones, on other probes in the future, I suppose the acid test will be the amount of protest when we finally launch something with a working reactor aboard.

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Near Miss

In other space news today, the near-Earth asteroid 2005 YU55 has passed within lunar orbital distance on its way by Earth. This encounter has seen a great deal of coverage in the mainstream media, given that the asteroid won’t even be visible to the naked eye.

It will be interesting to see what we learn from the extensive radar observations planned today, as we don’t often get a rock this size (400m across) anywhere this close to our big instruments.

Today’s encounter with this rock should serve as a reminder that asteroids pass near Earth reasonably frequently, tiny ones hit us all the time, and larger ones like 2005 YU55 can do so as well. 2005 YU55 is considered not hazardous, based on its orbit – today’s approach was about as close as it ever gets. Our next known close encounter with a potentially hazardous asteroid is in 2028, but an unanticipated encounter is still possible, practically at any time.

Earth’s role as a target in the “cosmic shooting gallery” is the theme of a game called “Torino Warning”, being produced by Proxima Centauri Games, an indie game studio in Colorado that makes space games. The game should be available for Android and in your PC browser later this month.

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Phobos-Grunt launched

Just last week it occurred to me to look at when this mission was due to launch, but in the press of events I failed to do so. Thus it’s pleasant news today that this long-planned mission has successfully launched, and is expected to reach Mars in September next year.

Phobos-Grunt is an exciting mission for several reasons, one being it’s a resurgence of Russian efforts at Mars. They’ve had a lot more success at Venus… I think not one Soviet/Russian attempt to get a probe to Mars has succeeded. This is a huge disappointment, because the Russian space program is generally quite competent, and because international efforts generally deliver a lot more science: more countries can either fund better-equipped probes, or more of them, and the missions tend to arrive over time, rather than all at once. With international sharing of the data among researchers, the result tends to be that we all get a much better picture of the target.

Phobos-Grunt is an ambitious mission – it’s not actually headed for Mars proper. Its target is Phobos, the larger of Mars’ two moons. The main goal is to determine whether Phobos is fairly solid, or a rubble-pile held together by gravity. That’s a question that could be asked about many main belt or near-Earth asteroids, as well. Making the mission technically challenging, it’s a sample-return mission. After approaching Phobos, landing, and collecting a sample, a portion of the lander will take off and head for Earth, returning home in 2014.

One further fun fact about Phobos-Grunt. Besides cooperation and instrumentation from ESA members, and a life-sciences payload from the Planetary Society, this mission also carries a piggyback probe. When Phobos-Grunt arrives at Mars this year, Yinghou-1, China’s very first Mars probe, will independently enter orbit.

UPDATE (9 Nov 11): And, very unfortunately, the Russians’ Mars “curse” continues. Phobos-Grunt launched OK to Earth orbit, but never fired its transfer engine to head for Mars.

Now if ONLY we had the technology for on-orbit repairs.. oh, wait, we do. Now if only we had cheap launch vehicles available on short notice to send a manned crew to its orbit to MAKE those repairs….

I don’t know about NASA, the ESA, or Roscosmos, but I’d spend a few tens of millions to salvage a mission that cost ten or a hundred times that. SpaceX, there’s another market waiting if you build the capability to get there.

Well, this sucks in about five ways.

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