XKCD has a wonderful graphic to illustrate how the gravity wells of different bodies in our solar system compare to each other.
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Truly a work of art and science.
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So, I think the small fighter craft would be nearly spherical, with a single main engine and a few guns or missiles facing generally forward. They would have gyroscopes and fuel tanks in their shielded centers. It would make sense to build their outer hulls in a faceted manner, to reduce their radar cross-section. Basically, picture a bigger, armored version of the lunar module. The larger warships would also probably be nearly spherical, with a small cluster of main engines facing generally backward and a few smaller engines facing forward or sideways for maneuvering. Cannons, lasers, and missile ports would face outward in many directions. On a large enough space cruiser, it would even be a good idea to put docking ports for the small fighters, so that the fighters don't have to carry as many consumables on board.
I think it's time to sketch some pictures and write some stories!
My wife reminded me that we are only 13 days away from Christmas. How does this sort of thing catch up on me? I mean, it seems like only a few weeks ago that we were celebrating Thanksgiving. Time flies. Next thing you know, it will be 2010. Then, we can join everybody in pronouncing the year, “Twenty-Ten” instead of “Two-thousand and nine”. I know this is not something worth arguing, but I think the only person I hear saying “Twenty-oh-nine” is the bow-tied Charles Osgood on CBS Sunday Morning. And he is correct, by the way. Everyone else I know says “Two-thousand and nine.” All I know is, this year; I am going to party like it is “One Thousand, nine-hundred, and ninety-nine.”.
HEIDELBERG, Germany -- It is a story guys everywhere have been waiting to hear. Beer may actually help prevent prostate cancer.
Preliminary evidence shows an ingredient in beer that's derived from hops is able to block the effect of testosterone on the prostate.
However, one doctor told USA Today that if beer could prevent prostate cancer, we would already see lower rates of it.
SpaceShipTwo made its debut here today – a super-slick looking rocket plane showcased as the world's first passenger-carrying commercial spacecraft. The enterprise is under the financial wing of well-heeled U.K. billionaire and adventurer Sir Richard Branson and his space tourism firm Virgin Galactic.
Some 800 onlookers were treated to the rollout ceremonies – an event that took place in a very cold, windy, and near-snow desert environment here at the Mojave Air and Space Port. Still, attendees were treated to a glittery and spectacular site – the public unveiling of SpaceShipTwo, slung underneath its carrier aircraft.
At the rollout, New Mexico Governor Bill Richardson was joined by California Governor Arnold Schwarzenegger for the honor of christening SpaceShipTwo as Virgin Space Ship (VSS) Enterprise.
"I have to tell you that there's a lot of cool things you get to do when you're Governor, said Schwarzenegger. "But today is one of the coolest things that I've ever done."
.Smith: “He’s the first Iranian to play in the NBA.” (Smith pronounced Iranian as “Eye-ranian,” a pronunciation that offended a viewer who complained.)
Lawler: “There aren’t any Iranian players in the NBA,” repeating Smith’s mispronunciation.
Smart armor being developed by scientists and engineers at U.S. Army Tank Automotive Research, Development and Engineering Center in Michigan can not only predict its own failure, but also identify the size of bullets shot at it and even generate electrical power upon impact..
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Intelligent armor is based on piezoelectrics, or materials that generate a small voltage when bent. The reverse is also true: Apply a small voltage, and a piezoelectric material will bend.
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Each plate of armor, whether its [sic] wrapped around a soldier's body or vehicle's chassis, has two piezeoelectric sensors attached to it.
An electric current flows into one sensor and turns it into mechanical energy in the form of a tiny vibration that ripples through the armor plate. The other piezoelectric device takes that mechanical vibration and turns it back into electrical energy.
Anywhere from five to 15 volts of electricity is pumped into, and out of, an intact plate of armor. If the armor has been damaged by bullets, shrapnel or anything else, some of the current released into the armor won't be picked up on the other end.
By measuring just how much energy is lost, the TARDEC scientists can determine how damaged the armor is.
As on Earth, electrical fields above Saturn interact with atmospheric chemicals to produce shimmering lights above the polar regions.
Now NASA's Cassini spacecraft has captured video of Saturn's aurora.
Saturn's flicking polar lights dance higher above the planet – 750 miles (1,200 km) – than any known aurora in the solar system. They ripple like tall curtains, changing every few minutes, according to a statement today from the space agency.
"The auroras have put on a dazzling show, shape-shifting rapidly and exposing curtains that we suspected were there, but hadn't seen on Saturn before," said Andrew Ingersoll of the California Institute of Technology in Pasadena. "Seeing these things on another planet helps us understand them a little better when we see them on Earth."
BOULDER, Colo. - Call it Operation: Plymouth Rock. A plan to send a crew of astronauts to an asteroid is gaining momentum, both within NASA and industry circles.
Not only would the deep space sojourn shake out hardware, it would also build confidence in long-duration stints at the moon and Mars. At the same time, the trek would sharpen skills to deal with a future space rock found on a collision course with Earth.
In Lockheed Martin briefing charts, the mission has been dubbed "Plymouth Rock — An Early Human Asteroid Mission Using Orion." Lockheed is the builder of NASA's Orion spacecraft, the capsule-based replacement for the space shuttle.
It's official: There's water ice on the moon, and lots of it. When melted, the water could potentially be used to drink or to extract hydrogen for rocket fuel.
NASA's LCROSS probe discovered beds of water ice at the lunar south pole when it impacted the moon last month, mission scientists announced today. The findings confirm suspicions announced previously, and in a big way.
"Indeed, yes, we found water. And we didn't find just a little bit, we found a significant amount," Anthony Colaprete, LCROSS project scientist and principal investigator from NASA's Ames Research Center at Moffett Field, Calif.
[J]ust as the Church eventually made accommodations after Copernicus and Galileo showed that the Earth was not the centre of the universe, and when it belatedly accepted the truth of Darwin's theory of evolution, Catholic leaders say that alien life can be aligned with the Bible’s teachings.Father Jose Funes, a Jesuit astronomer at the Vatican Observatory ..., said: "As a multiplicity of creatures exists on Earth, so there could be other beings, also intelligent, created by God.
"This does not conflict with our faith, because we cannot put limits on the creative freedom of God."
Mercury's atmosphere is what scientists call an "exosphere," and is made up of atoms kicked up from the surface. It is very tenuous and has a very low density, meaning atoms in the atmosphere rarely run into each other. It also has a tail that streams away from the planet in the opposite direction of the sun.
MESSENGER looked at differences in three atoms in the exosphere — sodium, calcium and magnesium — between the probe's three flybys. They detected much less sodium during the third flyby than they had during the second.
"While this is dramatic, it isn't totally unexpected," [mission scientist Ronald Vervack, Jr., of The Johns Hopkins University Applied Physics Laboratory] said. This is because radiation pressures from the sun change as Mercury moves through its orbit, which changes the amount of sodium liberated from the surface.
In essence, Mercury's atmosphere experiences seasonal effects during the planet's orbit.
If Kohler is to be believed, then astronauts have been sexing it up in space for some time now and have been taping it for research purposes. And, given the tight confines of spacecraft and the need for at least one other person to be present to tape the encounter, it seems that any such mission would turn out to be nothing more than a porno movie shoot under very difficult circumstances."The issue of sex in space is a serious one," [French writer Pierre Kohler] says. "The experiments carried out so far relate to missions planned for married couples on the future International Space Station, the successor to Mir. Scientists need to know how far sexual relations are possible without gravity."
He cites a confidential Nasa report on a space shuttle mission in 1996. A project codenamed STS-XX was to explore sexual positions possible in a weightless atmosphere.
Twenty positions were tested by computer simulation to obtain the best 10, he says. "Two guinea pigs then tested them in real zero-gravity conditions. The results were videotaped but are considered so sensitive that even Nasa was only given a censored version."
Rocket propellant has barely changed in the more than 50 years since the launch of the first artificial satellite Sputnik. But a new mixture of nano-aluminum powder and frozen water could make rocket launches more environmentally friendly, and even allow spacecraft to refuel at distant locations such as the moon or Mars.
The aluminum-ice propellant known as ALICE gets its kick from a chemical reaction between water and aluminum. Researchers hope that the hydrogen products of that reaction might go beyond launching rockets, and also feed hydrogen fuel cells for long duration space missions.
"In the bigger picture, we're looking at technology that can store hydrogen long term," said Steven Son, a professor of mechanical engineering at Purdue University. "Water is a nice, stable way to store hydrogen."
Both NASA and the Air Force Office of Scientific Research have shown enough interest in the concept to fund initial rocket firing tests. The research teams at Purdue and Penn State University used ALICE to successfully launch a rocket to 1,300 feet during an August flight test.
Such technology may not see action for some years to come, or at least until NASA sorts out its space exploration plans. But the recent confirmation of water sources on the moon and Mars may hint at a future where ALICE and similar rocket propellants become highly practical.
Almost six years ago, the nation embarked on a new space policy of retiring the Space Shuttle in 2010 (next year, after the International Space Station is complete) and replacing it with a new (and presumably safer) means of getting crew to and from orbit. This vehicle’s primary mission was to carry astronauts to the moon and beyond, but most people assumed that it would also be capable of replacing the Shuttle for that purpose. It wasn’t planned to be ready until 2014 and in the half decade since, the schedule has slipped years beyond that, while its budget has ballooned. So now the original “gap” during which the U.S. would be incapable of launching its own crews into orbit to change out astronauts at the space station has grown from three years to five or more.
What does this have to do with the Iranian nukes problem and the Russians?
It has always been assumed that “the gap” would be filled by Russian Soyuz flights, as it was during the previous “gap” created when the Shuttle was shut down for almost three years after the loss of Columbia. But there was always a bug in that ointment, called the Iran, North Korea, and Syria Nonproliferation Act (INKSNA). It is a U.S. law that prohibits purchases from countries that aid those countries for which it is named in their efforts to develop missiles and nuclear weapons. By the letter of the law, Russia has always been in violation of it, realistically, but it has always maintained sufficient plausible deniability to allow Congress to grant it waivers so that NASA could continue to get Russian support for ISS, which has been difficult to maintain without it, even with the Shuttle operating. Once the Shuttle retires, it will be almost unthinkable: Russia will have the only system capable of delivering humans to orbit.
Scientists said NASA's moon-smashing mission produced enough data on Friday to address questions about lunar water ice — but the crash didn't come close to meeting public expectations as a cosmic fireworks show.
"Today we kicked up some moondust, and all indications are we are going to have some really interesting results," said Pete Worden, director of NASA's Ames Research Center in California. Ames served as the mission control center for the Lunar Crater Observation and Sensing Satellite mission, or LCROSS....
The LCROSS blast promised to show how much water ice might lie within a cold, dark crater known as Cabeus. And judging by that scientific standard, members of the LCROSS team said Friday's closely observed crash was shaping up as a smashing success. The spacecraft hit the crater in a shadowed area, just as hoped. All of LCROSS' instruments appeared to be working as expected, and observations were streaming in from a network of ground-based telescopes monitoring the impact.
Scientists are hoping for a literal slam dunk with NASA's upcoming Lunar Crater Observation and Sensing Satellite, or LCROSS mission — an event to be observed by a coordinated network of Earth and space-based equipment. [emphasis added]We'll look at it for just a moment. That's all. I don't want to get a reputation for being a grammar grouch.
Scientists are hoping for a literal slam dunk with NASA's upcoming Lunar Crater Observation and Sensing Satellite, or LCROSS mission — an event to be observed by a coordinated network of Earth and space-based equipment.Let the crashing begin! I just wish I could see it happen in real-time.
LCROSS will search for water ice on the moon on Friday morning by crashing its spent upper-stage Centaur rocket into Cabeus, a permanently sunlight-shy crater within the lunar south pole region. The impact is set for 7:30 a.m. EDT (1130 GMT).
That Centaur will serve as a heavy impactor on the moon, with scientists hoping a resulting debris plume will ascend above the moon's landscape. The intent is to toss tons of debris and potentially water ice and vapor high above the lunar surface.
As part of the LCROSS mission, along with the upper stage's "bang-up" job, a Shepherding Spacecraft will follow a similar trajectory of the Centaur, flying through and studying the Centaur impact plume before it too speeds into the lunar terrain.
The Punisher: Fix me up a file -- I'll pick him up in Houston at the trial. I'll need some bugs [listening devices] ...Sorry, Microman. That may be a joke, but it falls flatter than the Llano Estacado because the Panhandle of Texas is a looooong way away from Houston.
Microchip: You're gonna need some bug spray. The Panhandle gets mighty itchy this time of year.
"Widespread water has been detected on the surface of the moon," said planetary geologist Carle Pieters of Brown University in Rhode Island, who led one of the studies detailing the findings.
While the findings, detailed in the Sept. 25 issue of the journal Science, don't mean there are pools of liquid water sitting on the moon, it does mean that there is — entirely unexpectedly — water potentially tied up or mixed in the minerals that make up the lunar dirt.
"What we're detecting is completely unexpected," Pieters said. "The moon continues to surprise us."
Craters gouged into the ruddy Martian terrain have revealed subsurface water ice closer to the red planet's equator than would be expected, new orbiter images show.
The ice also seems to be 99 percent pure, instead of the dirty dust and ice mixture some scientists expected to see, scientists said today [September 24, 2009].
Brewed with pale malt that's been smoked with native mesquite in the backyard of our little brewery in Shiner, Texas (pop. 2,070), this refreshing Helles-style beer has a smoky flavor that goes great with all the flavors of summer.No, it doesn't. It goes great with nothing. I will probably finish the six-pack I bought (simply because I hate to waste money, and, hell, the beer's already paid for), but I don't see myself ever wasting another dime on this crappy variety. I like my smoke flavor on my barbecue brisket, not in my beer. Shiner does so well with its Bock, Hefeweizen, and other seasonal flavors that there's no reason to keep this line on.
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"It's a very, very different environment than I expected," Discovery shuttle pilot Kevin Ford, a first-time spaceflyer, said from orbit late Friday.And one of the coolest things about the moon is that it apparently smells like gunpowder, at least it did to the Apollo explorers when the astronauts got back into the landers and took off their helmets.
One of things Ford wasn't ready for is the weird smell.
"From the [spacewalks] there really is a distinct smell of space when they come back in," Ford said from the station in a Friday night news conference. "It's like...something I haven't ever smelled before, but I'll never forget it. You know how those things stick with you."
"It is really a strong smell," radioed Apollo 16 pilot Charlie Duke. "It has that taste -- to me, [of] gunpowder -- and the smell of gunpowder, too." On the next mission, Apollo 17, Gene Cernan remarked, "smells like someone just fired a carbine in here."Which gets me to thinking: Could firearms work in space? The cartridges are sealed, and they operate on simple chemical reactions, so I guess you could theoretically shoot a gun in space, or on the moon. Now, whether you'd actually want to is another thing. There's that whole law of physics that says for every action there is an equal and opposite reaction, which means recoil would be a bitch.
Alexander Nevsky deals with the Russian defense of Novgorod in 1242 against the invading Knights of the Teutonic Order. Prince Alexander Nevsky, through the power of his personality alone, gathered an enormous army and met the enemy on the frozen waters of Lake Chud. There he dealt them a humiliating defeat, thus saving his country from the brutality threatened by the German horde. (The film was made one year before the signing of the Soviet-Nazi pact, and sentiment in Russia was at that time violently anti-German.) With this epic and heroic tale as a pivot, Prokofiev created a score that equaled in every degree the dynamism and vitality of Eisenstein's movie.That's a pretty good description of the work. And now, here are some bits from each movement that should give you a good sample of what Nevsky is all about. (These excerpts are from the recording of Charles Dutoit leading the Montreal Symphony.)