Thursday 27 September 2012

mY liFe mY waY:Engineer Thinks We Could Build a Real Starship Enterprise in 20 Years


Engineer Thinks We Could Build a Real Starship Enterprise in 20 Years

by NANCY ATKINSON on MAY 11, 2012
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Diagram of a proposed current generation of a Starship Enterprise. Credit: BuildTheEnterprise.org
In Star Trek lore, the first Constitution Class Starship Enterprise will be built by the year 2245. But today, an engineer has proposed — and outlined in meticulous detail – building a full-sized, ion-powered version of the Enterprise complete with 1G of gravity on board, and says it could be done with current technology, within 20 years. “We have the technological reach to build the first generation of the spaceship known as the USS Enterprise – so let’s do it,” writes the curator of the Build The Enterprise website, who goes by the name of BTE Dan.
This “Gen1” Enterprise could get to Mars in ninety days, to the Moon in three, and “could hop from planet to planet dropping off robotic probes of all sorts en masse – rovers, special-built planes, and satellites.”
Size comparisons of buildings to the proposed USS Enterprise. Credit: BuildTheEnterprise.org
Complete with conceptual designs, ship specs, a funding schedule, and almost every other imaginable detail, the BTE website was launched just this week and covers almost every aspect of how the project could be done. This Enterprise would be built entirely in space, have a rotating gravity section inside of the saucer, and be similar in size with the same look as the USS Enterprise that we know from Star Trek.
“It ends up that this ship configuration is quite functional,” writes BTE Dan, even though his design moves a few parts around for better performance with today’s technology. This version of the Enterprise would be three things in one: a spaceship, a space station, and a spaceport. A thousand people can be on board at once – either as crew members or as adventurous visitors.
While the ship will not travel at warp speed, with an ion propulsion engine powered by a 1.5GW nuclear reactor, it can travel at a constant acceleration so that the ship can easily get to key points of interest in our solar system. Three additional nuclear reactors would create all of the electricity needed for operation of the ship.
The saucer section would be a .3 mile (536 meter) diameter rotating, magnetically-suspended gravity wheel that would create 1G of gravity.
The first assignments for the Enterprise would have the ship serving as a space station and space port, but then go on to missions to the Moon, Mars, Venus, various asteroids and even Europa, where the ships’ laser would be used not for combat but for cutting through the moon’s icy crust to enable a probe to descend to the ocean below.
Of course, like all space ships today, the big “if” for such an ambitious effort would be getting Congress to provide NASA the funding to do a huge 20-year project. But BTE Dan has that all worked out, and between tax increases and spreading out budget cuts to areas like defense, health and human services, housing and urban development, education and energy, the cuts to areas of discretionary spending are not large, and the tax increases could be small. “These changes to spending and taxes will not sink the republic,” says the website. “In fact, these will barely be noticed. It’s amazing that a program as fantastic as the building a fleet of USS Enterprise spaceships can be done with so little impact.”
“The only obstacles to us doing it are the limitations we place on our collective imagination,” BTE Dan adds, and his proposal says that NASA will still receive funding for the science, astronomy and robotic missions it currently undertakes.
A detailed schedule of building the Enterprise. Credit: BuildTheEnterprise.org
But he proposes not just one Enterprise-class ship, but multiple ships, one of which can be built every 33 years – once per generation – giving three new ships per century. “Each will be more advanced than the prior one. Older ships can be continually upgraded over several generations until they are eventually decommissioned.”
BTE Dan, who did not respond to emails, lists himself as a systems engineer and electrical engineer who has worked at a Fortune 500 company for the past 30 years.
The website includes a blog, a forum and a Q&A section, where BTE Dan answers the question, “What if someone can prove that building the Gen1 Enterprise is beyond our technological reach?”
Answer: “If someone can convince me that it is not technically possible (ignoring political and funding issues), then I will state on the BuildTheEnterprise site that I have been found to be wrong. In that case, building the first Enterprise will have to wait for, say, another half century. But I don’t think that anyone will be able to convince me it can’t be done. My position is that we can – and should – immediately start working on it.”
For the complete space nerd experience, check out Build The Enterprise.
Hat tip to Rand Simberg.More From Universe TodayGeocentric Model


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mY liFe mY waY :Earth Has Less Water Than You Think


Earth Has Less Water Than You Think

by sandeep janjirala on MAY 8, 2012
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All the water on Earth would fit into a sphere 860 miles (1,385 km) wide. (Jack Cook/WHOI/USGS)
If you were to take all of the water on Earth — all of the fresh water, sea water, ground water, water vapor and water inside our bodies — take all of it and somehow collect it into a single, giant sphere of liquid, how big do you think it would be?
According to the U. S. Geological Survey, it would make a ball 860 miles (1,385 km) in diameter, about as wide edge-to-edge as the distance between Salt Lake City to Topeka, Kansas. That’s it. Take all the water on Earth and you’d have a blue sphere less than a third the size of the Moon.
Feeling a little thirsty?
And this takes into consideration all the Earth’s water… even the stuff humans can’t drink or directly access, like salt water, water vapor in the atmosphere and the water locked up in the ice caps. In fact, if you were to take into consideration only the fresh water on Earth (which is 2.5% of the total) you’d get a much smaller sphere… less than 100 miles (160 km) across.
Even though we think of reservoirs, lakes and rivers when we picture Earth’s fresh water supply, in reality most of it is beneath the surface — up to 2 million cubic miles (8.4 million cubic km) of Earth’s available fresh water is underground. But the vast majority of it — over 7 million cubic miles (29.2 cubic km) is in the ice sheets that cover Antarctica and Greenland.
Of course, the illustration above (made by Jack Cook at the Woods Hole Oceanographic Institution) belies the real size and mass of such a sphere of pure liquid water. The total amount of water contained within would still be quite impressive — over 332.5 million cubic miles (1,386 cubic km)! (A single cubic mile of water equals 1.1 trillion gallons.) Still, people tend to be surprised at the size of such a hypothetical sphere compared with our planet as a whole, especially when they’ve become used to the description of Earth as a “watery world”.
Makes one a little less apt to take it for granted.
Read more on the USGS site here, and check out some facts on reducing your water usage here.
Water, water, every where,
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.

Monday 24 September 2012

mY liFe mY waY:Carnival of Space #268


Carnival of Space #268

by sandeep janjirala on SEPTEMBER 24, 2012
This week’s Carnival of Space is hosted by Stefan Lamoureux at the Links Through Space website, the site of an astronomy club in Kustavi, Finland.
And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry to carnivalofspace@gmail.com, and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out, sign up to be a host. Send an email to the above address.

Fly Over California Alongside a Space Shuttle!

by sandeep janjirala on SEPTEMBER 24, 2012
A view of Endeavour and SCA over California from one of NASA’s F/A-18 chase planes (NASA/DFRC)
We’ve shared several videos from Endeavour’s trip to Los Angeles last week, taken by excited spectators along various portions of the flight path, but what was it like for the crews of the two NASA F/A-18 chase planes that accompanied the orbiter and SCA every step of the way?
Watch the video below, and put yourself in the pilot’s seat…
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Weekly SkyWatcher’s Forecast: September 24-30, 2012

by sandeep janjirala on SEPTEMBER 23, 2012
 Plato Crater – Credit: Damian Peach
“Shine on, shine on Harvest Moon… Up in the sky…” Oh! Howdy, fellow SkyWatchers! The seasons are most surely showing their changes in both hemispheres and this week marks the famous “Harvest Moon”. The Moon will very much be in the eyepiece this week, so enjoy some great studies. However, don’t put away your telescopes just yet! Bright skies are a great time to catch up on double star studies and variables. Whenever you’re ready, just meet me in the back yard… [click to continue…]

Curiosity Shows Off Its Credentials

by sandeep janjirala on SEPTEMBER 22, 2012
Plaque on the exterior of Mars Science Laboratory, aka “Curiosity” (NASA/JPL-Caltech/MSSS)
Curiosity drops a few rather big names in recent images taken with its MAHLI (Mars Hand Lens Imager) camera: here we see a plaque affixed to its surface bearing the names and signatures of U.S. President Barack Obama, Vice President Joe Biden, Office of Science and Technology Director John Holdren, NASA Administrator Charles Bolden and other key figures responsible for making the Mars Exploration Program possible.
You never know… even on another planet it can’t hurt to have friends in high places!
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We’ve written about Uwingu previously, and this creative new concept for creating funding for space exploration and astronomy is now in their final push to reach their Indigogo goal of raising an initial $75,000 through their Indiegogo page (similar to Kickstarter) to get the company going. After that, they hope to be self-sufficient and build enough resources to be a source of grants and funding for space and astronomy research. Indigogo provided the group a rare extension in their funding-raising drive, which now goes through Monday night, September 24 at 11:59PM Pacific Time.
Why Uwingu?
“It seems like every single year there is a funding problem for space researchers and educators, and every year it is something different,” said one the people behind Uwingu, Alan Stern, speaking on Colorado Public Radio. “It’s the economy or Congress or budget overruns, or cuts from the presidential administration, but every year there is a budget battle. … We started to think, what could we do that could make a difference?”
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So You Want to Look at the Moon?

by sandeep janjirala on SEPTEMBER 22, 2012
 Photo credit: NASA.
This Saturday September 22, 2012 marks the 3rd annual International Observe the Moon Night (InOMN), when people all over the world will gather to observe the Moon. But what do you do the rest of the year? Luckily, in today’s internet age, there is a great deal of lunar data, from a range of missions, available on-line for you to look at. Also, some great tools have been developed that make data easy to access, put into context, and interpret, giving everyone the power to explore the Moon like a scientist. All you need to do it click on the URL and you’re off…
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Twitter is all abuzz with sightings of a huge fireball meteor that streaked across the skies Friday night at approximately 22:00 UTC. There are reports from Northern Ireland, Scotland, and Central England.
I’m going to link a bunch of videos so you can check out the event from multiple angles, but I want to make a completely unscientific judgement: it kind of looks like a re-entering spacecraft. Take a look at what the Jules Verne spacecraft looked like when it came back into the Earth’s atmosphere. See how it broke up into all those pieces?And don’t let anyone fool you with this picture. It was taken about 3 years ago in the Netherlands.
Phil made a similar observation, but he’s still on the fence. We’ll have to wait for someone official to tell us what it was.
Did you see it? Did you get a video?
I’ll give you an update as soon as I know anything else.
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California was invaded by an unusual flying duo today: the Space Shuttle Endeavour sitting atop a 747 airplane, the Shuttle Carrier Aircraft. Above, you can watch it they flew over the Golden Gate Bridge in San Francisco, and below are more images and video of the flybys from various locations, including a video by GamerChick5567, who said, “IT FLEW OVER MY HOUSE!!!! :P ” Endeavour made its final landing at LAX in Los Angeles, and will be transported to its permanent home at the California Science Center next month.
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Weird Mars Rock Has Interesting Back Story

by sandeep janjirala on SEPTEMBER 21, 2012
The rock chosen for the first contact science investigations for the Curiosity rover. Credit: NASA/JPL-Caltech
The Mars Science Laboratory team has identified their target for the first full-up contact science investigations using all the instruments attached to the Curiosity rover’s robotic arm. And ‘target’ is the operative word here, as this rock will be shot with Curiosity’s laser to help determine it chemical makeup. Interestingly, it has an unusual pyramid shape, and it was described as a “cool-looking rock sitting out on the plains of Mars,” by MSL project scientist John Grotzinger. But the rock now has a name, and while we don’t know everything about it yet, like its namesake, this rock likely has a very interesting back story.

What Caused the Recent Explosion at Jupiter?

by sandeep janjirala on SEPTEMBER 21, 2012
An impact on Jupiter captured about 6:35 am on Sept. 10, 2012 from Dallas, Texas USA. Credit: George Hall.
A bright flash was spotted on Jupiter early on the morning of September 10, 2012, and astronomers were hoping to later see an impact “scar” which would provide more information about the object that slammed into the giant gas planet. Was it a comet, asteroid or a smaller meteor? But alas, no impact scar or debris field showed up on Jupiter’s face and the nature of this explosion may remain a mystery.
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Astrophoto: Crescent Moon Crossing

SEPTEMBER 21, 2012
Astrophotographer Ken Lord caught an airplane crossing in front of a setting crescent Moon in British Columbia, Canada. Credit: Ken Lord The things you can see out your door! On a previous image in this sequence, Ken Lord from British Columbia, Canada said he stuck his head out the door and happened to see a [...]
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Saturn Shows Off Its Shadow

SEPTEMBER 21, 2012
Take a look up at the enormous shadow cast by Saturn onto its own rings in this raw image, acquired by NASA’s Cassini spacecraft on September 18, 2012. Cassini captured this image from below Saturn’s ring plane at a distance of 1,393,386 miles (2,242,437 kilometers). It shows not only the gas giant’s shadow but also [...]
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Shuttle Endeavour Lands for the Final Time at Edwards Air Force Base

SEPTEMBER 20, 2012
En route to its final home in Los Angeles, space shuttle Endeavour is taking a victory tour of sorts through the southern part of the US. Yesterday, the shuttle took off from Kennedy Space Center, mounted atop the Shuttle Carrier Aircraft (SCA), and landed in Ellington Field near Johnson Space Center in Houston, flying over [...]
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Next SpaceX Launch to ISS Set for October 7

SEPTEMBER 20, 2012
SpaceX’s Falcon 9 rocket with a Dragon spacecraft is rolled out to the company’s launch pad in Cape Canaveral, Florida. Credit: SpaceX There will be more Dragons in space! The SpaceX Dragon’s next launch to the International Space Station has been scheduled for Sunday, October 7, 2012, NASA and SpaceX announced today. This will be [...]
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Endeavour Departs Kennedy Forever for California Home

SEPTEMBER 20, 2012
Image caption: Endeavour departs Kennedy Space Center forever on Sept 19 on last flight of NASA’s Space Shuttle Program. Credit: Ken Kremer Under cloudy skies at first light, Space Shuttle Endeavour departed NASA’s Kennedy Space Center in Florida early Wednesday morning, Sept. 19, at about 7:22 a.m. EDT marking the final flight of NASA’s storied [...]
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Dawn Finds Asteroid Vesta is Rich in Hydrogen

SEPTEMBER 20, 2012
This map from NASA’s Dawn mission shows the global distribution of hydrogen on the surface of the giant asteroid Vesta. Credit: NASA/JPL-Caltech/UCLA/PSI/MPS/DLR/IDA The giant asteroid Vesta appears to have a bellyful of hydrogen. Data from the Dawn spacecraft reveals hydrated minerals in a wide area around Vesta’s equator. While Dawn did not find actual water [...]
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Weekly Space Hangout – Sep. 20, 2012

SEPTEMBER 20, 2012
Once again, it’s time for the Weekly Space Hangout – our round up of all the big space news stories that you should be aware of. This week we talked about the following interesting stories in space and astronomy: NASA Working on a Real Warp Drive Transit of Phobos Seen by Curiosity What Happened at [...]
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Gaia Mission Passes Vital Tests

SEPTEMBER 20, 2012
Caption: Fully integrated Gaia payload module with nearly all of the multilayer insulation fabric installed. Credit: Astrium SAS Earlier this month ESA’s Gaia mission passed vital tests to ensure it can withstand the extreme temperatures of space. This week in the Astrium cleanroom at Intespace in Toulouse, France, had it’s payload module integrated, ready for [...]
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The Universe Shines for Astronomy Photographer of the Year Winners

SEPTEMBER 20, 2012
The overall winner in the Royal Observatory Greenwich’s annual Astronomy Photographer of the Year competition, M51 by Martin Pugh. Want to see some absolutely gorgeous images of our Universe, all taken by amateur astrophotographers? Look no farther than the winners of the 4th annual Astronomy Photographer of the Year competition, held by the Royal Observatory [...]
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Astrophoto: A Well-Rounded Glow

SEPTEMBER 20, 2012
The bubble nebula Abell 39. Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona In theory, planetary nebulae should be simple and spherical, like the soap bubbles you made as a child. But only a rare few actually are! Here’s an example of one of the almost perfectly round planetary nebulae. “Abell 39 is the quintessential bubble [...]
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