Technical Writer for Space Industries: an Interview with Lori Yost
Space Studies Tuesday: Types of Spacecraft
Find the lesson here: http://www2.jpl.nasa.gov/basics/bsf9-1.php
Robotic spacecraft are divided into eight categories, which are explained in the lesson. I thought I'd post about a current mission in each category:
Flyby spacecraft: EPOXI, which finished its mission in 2010, flew by the Hartley 2 comet, checking out the differences between it and another comet it observed, Temple 1. It also took reading of five distant stars to find other planets. http://www.jpl.nasa.gov/missions/details.cfm?id=5872
Orbiter spacecraft: The Dawn spacecraft is an orbiter, with the mission of studying two protoplanets, "baby planets whose formation was interrupted by the formation of Jupiter," according the the JPL website.. Dawn has been studying Vesta and is moving on this week to Ceres. It uses an ion engine that generates a small but continuous amount of thrust. http://dawn.jpl.nasa.gov/mission/
Atmospheric spacecraft: Huygens, which is mentioned in the lesson, is the latest example I found. http://www2.jpl.nasa.gov/basics/huygens.php. There are other craft that are studying the atmosphere, like the Mars Atmosphere and Volatile EvolutioN (MAVEN), which will study Mars' atmosphere to determine how had changed over time. http://www.nasa.gov/mission_pages/mars/news/maven_20080915.html
Lander spacecraft: The next lander planned by NASA is InSight, which in a sense is also a penetrator, as it will drill into the surface of Mars to gain insight into its makeup and evolution. http://www.jpl.nasa.gov/missions/details.cfm?id=5928
Of course, the goal on the commercial side is to send some really awesome landers that will serve as habitats for humans, such as in the Mars-One mission: http://mars-one.com/en/
Penetrator spacecraft: There haven't been any actual penetrator spacecraft missions in several years. The latest one on the NASA site is Deep Impact, which studied the comet Tempel 1: http://solarsystem.nasa.gov/deepimpact/index.cfm
Rover spacecraft:
Obviously, the spacecraft of the day, Mars Curiosity, is a rover. What I didn't realize is how slow the rover moves. On last Tuesday, it traveled 52 feet, and the goal, apparently, is a football field length a day. Check out the article here: http://www.huffingtonpost.com/2012/08/29/mars-rover-drive-curiosity-glenelg_n_1841698.html? Did you know you can follow Curiosity on Twitter? http://twitter.com/MarsCuriosity
Observatory spacecraft: Hubble is an obvious example. However, I'm going to mention Planetary Resources' ARKYD LEO spacecraft, which will be several orbiting telescopes thatwill search out asteroids for mining. http://www.planetaryresources.com/technology/leo-space-telescope/
Communications & Navigation spacecraft: By far, the most familiar of spacecraft, we depend on these kinds of craft daily.
NASA COTS program paying off? Summary of Aviation Week article
Watching the Space Race: Some (School) Assembly Necessary
By Walt Staples
Watching the Space Race: High Expectations and Low Comedy
By Walt Staples
Some good news in Earth Security
Looks like we may not be in as much danger as we thought.
In 1998, Congress asked NASA to map the skies and determine just how many asteroids that could wreck havoc--from Armageddon to "Downtown is now a crater--news at 11." This means asteroids roughly 330 meters in size and spanning as far as the asteroid belt. the result id good news for the Earth...and not-so good news for Hollywood or Armageddon alarmists. The estimate of asteroids that could destroy our home has been cut significantly: from 35,000 to about 19,500.
The main reason: we can judge sizes better in infrared, which is what NASA is using in its Wide-field Infrared Survey Explorer. Using infrafre rather than visible light, we can get a better idea of the size of an object because it doesn't depend on how well the object reflects light. A material's ability to reflect light is it's albedo. As you can see from this image, a small object with a high albedo looks as bright as a big object with a low albedo. In infrared, however, the size is more apparent.
So the number of wreck-your-world asteroids is cut. Does that help us? Perhaps, in that we can more easily track them. Of the large asteroids, 981 have been found, and we're tracking 911 already, for example.
Of course, the real question is, should we see one heading our way, what can we do? At least we know the chances of that happening are smaller. None of the large planet-killers should be heading our way for a few centuries, according to NASA, so we have some breathing time.
Full article here: http://www.nasa.gov/mission_pages/WISE/news/wise20110929.html
Watching the Space Race: An Orb in Space
Here's you chance to be an astronaut!
Serioiusly! NASA has opened up applications for astronauts. Get the details here: http://astronauts.nasa.gov/.
You have until January 27, so brush up those resume's now.
There's no guarantee that as an astronaut, you'll actually go into space. Instead, you get to go around doing PR work for NASA, along with lots of ground-based work. In fact, do you know what they call astronauts who never get off the Earth?
Incidentally, people will be applying via the military as well. Rob's already getting the forms from the manpower folks. He wants to be the next Fabian in Space.
| Not a penguin. |
NASA Mars rover "Curiosity" launched Nov 26!
Curiosity will land on August 5 or 6, 2012, and have a Martian-year-long mission, about 98 Earth weeks. It's main purpose is the look for life or the possibility of life--either indigenous or supporting human colonization. It has 10 instruments to study the land and the atmosphere, with four objectives (taken from the NASA press package):
The mission has four primary science objectives to meet NASA’s overall habitability assessment goal:
• Assess the biological potential of at least one target environment by determining the nature and inventory of organic carbon compounds, searching for the chemical building blocks of life and identifying features that may record the actions of biologically
relevant processes.
• Characterize the geology of the rover’s field site at all appropriate spatial scales by investigating the chemical, isotopic and mineralogical composition of surface and near-surface materials and interpreting the processes that have formed rocks and soils.
• Investigate planetary processes of relevance to past habitability (including the role of water) by assessing the long timescale atmospheric evolution and determining the present state, distribution and cycling of water and carbon dioxide.
• Characterize the broad spectrum of surface radiation, including galactic cosmic radiation, solar proton events and secondary neutrons.Curiosity will not be looking for life itself. It's not equipped to detect biological processes or to analyze (or recognize) fossils. (Though I imagine that if it were to photograph some, there'll be some people screaming about it at NASA/JPL!)
Curiosity will be tooling around the Gale Crater, which was chosen after looking at over 30 different sites and years of debate. This video gives the reasons why they selected it.
Congratulations, NASA and good luck, Curiosity!
For more reading: http://www.jpl.nasa.gov/news/press_kits/MSLLaunch.pdf
http://www.jpl.nasa.gov/news/fact_sheets/mars-science-laboratory.pdf
SpaceX Meets Next Milestone for Manned Space Flight
Big congrats to SpaceX for getting NASA approval on its launch abort system for the Dragon manned capsule!
The launch abort system gives the astronauts an "abandon spaceship" option should there be a problem during launch. The Apollo capsules had one; the shuttles did not. NASA is requiring that all manned capsules in its COTS program have such a system, and with good reason.
This was the next stage in their preparation to send astronauts to the International Space Station, as well as other venues, such as Mars (which is founder Elon Musk's eventual goal) or other stations. What I've not been able to find online is a timeline for when the new system will be manufactured and put to practical tests. So far, NASA has only approved the designs, which is an important step, but just one. I think the goal is 2015; I'm hoping they can do it earlier than that, but there's a lot to consider, including government bureaucracy.
![]() |
| From Popular Mechanics, which awarded them a breakthrough award. |
One thing I'm hoping, is that the different space industries are talking about standardizing airlocks. this about what a pain and expense that will be if everyone's is just different enough that other ships won't fit.













