Showing posts with label Apollo. Show all posts
Showing posts with label Apollo. Show all posts

Wednesday, September 30, 2015

When Will We Go Back To The Moon?


I'll leave this right here:

               


This is a panoramic view of the Moon taken during the Apollo 17 mission in 1972, courtesy of the NASA History Office @NASAhistory. 

Spot NASA astronaut and Lunar Module Pilot Harrison Schmitt running on the Moon's surface.

Apollo 17 was the last of the crewed Apollo missions and Harrison Schmitt was one of the last humans to set foot on the lunar surface.

That was 43 years ago. Think about that.

What are we waiting for? A planetary disaster that will give us no choice? It's sure starting to look that way.

To be fair, China has plans to establish a permanent Moon base within 10-15 years. But still. It's been 43 years since humans walked on the Moon. We have learned so very much since then. 

Let's leave behind Earth's formidable gravity well and go apply our collective scientific and technological advancements - on another world!

It's only a 3-day trip away.



Monday, June 15, 2015

10 Reasons Why I Love Twitter #1: Tweeting Astronauts


As I’m squarely situated in the the middle-ish age range, Twitter usage among my friends, acquaintances and colleagues in my peer group seems pretty thin. When it does happen, I rarely see the enthusiasm and consistency that's in my daily tweet stream. So I often find myself explaining "why I do Twitter", "how I put up with the garbage on Twitter", "why Twitter is not a waste of my time", and so on. 

My response is to turn negative misconceptions around and explain why I enjoy Twitter and how it benefits me on many levels.

I have these conversations so frequently that I might as well write an explainer I can point to when questions from non-Twitter users come up in the future. 

Reason #1 is below.

#2 - #10 will be published in installments as I have time.




10 Reasons Why I Love Twitter

#1: Tweeting Astronauts ~ 

There are dozens, possibly well over a 100 astronauts active on Twitter. By "astronauts" I mean active or retired members of NASA and other astronaut corps (e.g., Roscomos, ESA, CSA, JAXA) who are in space, have been to space, or are training to go to space.

Yes, there are astronauts tweeting from the International Space Station, every day. Currently there is one space-based tweeter: Scott Kelly (@StationCDRKelly). There are three astronauts on the ISS at the moment; when there's the usual crew of six aboard, you can find two or three astronauts sending daily tweets from space.

You need only scroll through my Twitter timeline pictures (@ct_la) to see breathtaking vistas of our home planet and fascinating images of life on orbit at our human outpost in space.

Astronauts have been tweeting from the ISS since 2009. The myriad images of our fragile Earth have changed the mental representation I had of our planet. I love maps and my walls are full of them. Sometime around 2010 or so, I found myself looking at a physical map of the U.K. and said "Wait a minute. That is NOT what England really looks like!" By then I had seen dozens of images of Europe from space and become accustomed to the fact that in those images North is not always up, curvature of the Earth is an important marker and non-natural boundaries so common on conventional maps are non-existent. Now, when I think of, for example, Turkey, I don’t envision a map-like representation. Instead, I think of an image like this:



Image of western Turkey 
Tweeted by Samantha Cristoforetti (@Astro_Samantha) from the ISS on June 2, 2015 


It’s not easy to pick the one most awesome thing an astronaut has ever tweeted from space, but if I have to choose, I'll go with Canadian astronaut Chris Hadfield’s (@Cmdr_Hadfield) rendition of David Bowie’s "Space Oddity", performed in microgravity. 

If you have a different all-time-favorite tweet from space, please tweet it @ me or leave a comment. I might have missed something! 

Earth-bound astronauts also provide plenty of twitter entertainment, education and fun. One of my favorites is Apollo-era moon walker Buzz Aldrin (@TheRealBuzz), who travels widely to do outreach for his "Get Yo Ass To Mars" campaign and, of course, tweets about it.

Another favorite is retired NASA astronaut Clayton Anderson (@Astro_Clay) who is a prolific daily tweeter and widely appreciated for consistently engaging his followers. This is, in fact, such an awesome Twitter perk that I wrote a separate post about it.



Thursday, January 15, 2015

Falcon 9 Delivers Dragon, Just Misses Landing


On Saturday, January 10, SpaceX's Falcon 9 flagship rocket launched a supply capsule to the International Space Station for the fifth time under a commercial resupply contract with NASA. The night launch out of Cape Canaveral was flawless in its beauty. Capture (aka catch the dragon with a robotic arm on the ISS) and docking of the capsule went as planned. 


 Image credit: SpaceX / NASA
SpaceX's Dragon CRS-5 being grappled and docked by astronauts aboard the International Space Station, with a little help from Houston Mission Control.

 
The historic aspect of this mission - landing Falcon 9's upper stage on a barge using technology developed by SpaceX - fell just short of its goal. The rocket reached the drone ship in the Atlantic, but didn't land on point. It crashed and damaged structures on the ship. Still, considering the difficulty of precision-landing a used rocket on a ship in the ocean, it was a bold attempt, a first in the history of rocketry. SpaceX is optimistic they will stick the landing next time.

The technological leap that comes with reliable reusability technology is significant. Capsules that return to Earth have historically landed inside vast target zones, such as the ocean (Apollo) or the Russian tundra (Soyuz), using parachutes and braking rockets. The precise landing spot is uncertain and ground support teams must locate the capsule once it has splashed or touched down. Since the Space Shuttle retirement, these imprecise landings are the only option we have to return astronauts to Earth. Compare that to the precision inherent in landing on a 300-by-170 foot (90-by-50 m) barge, and eventually a pad on land. Yes, a rocket isn't reusable if it reaches a specific spot and crashes on it, but I'm certain SpaceX is on its way to getting it right.

Elon Musk, SpaceX's CEO, posted this series of tweets, with his characteristic understatement and humor:






















Update January 16, 2015: 

Late last night, Elon Musk released drone footage pictures of the almost-landing and its aftermath on twitter. These tweets appeared as @ replies to another user, so they are not as visible as his regular tweets and got somewhat less attention than usual. In addition, these images were released the same day as the announcement of the Hyperloop test track construction in Texas, which dominated yesterday's coverage of Elon Musk. Well played, Elon!














I would have called it "involuntary full conversion of an asset" but RUD is good, too! Of course this wouldn't be Elon Musk tweeting without this next tweet. Unlike the others above, it appears in his main tweet stream (not tweets & replies) so it got a lot more attention in terms of FVs and RTs:



A few hours ago, a video of the (crash) landing appeared in SpaceX's main tweet stream:





As someone who has previously critiqued media coverage of SpaceX and its CEO, I noted a change in the tone used by space and science writers to cover the rocket company and its CEO over the past year, and especially today. Gone are the diminutive references and labels of SpaceX as a "scrappy startup". In its place are grudging acknowledgments that SpaceX is, in fact, a major player in the industry, evidenced by descriptors of Elon Musk as, for example, "space boss". I predict this will become "industry leader" within a year.