Airbrush

Too bad that intergalactic space is so much further away. Let's be realistic, beyond a radius of 100 light years is out of reach for a long, long time.

In that case, the 10%C spaceship could probably steer around a single object in its' path? Fields of asteroids is unlikely as you pointed out, and impacts coming from the sides would not be an issue either. So travel between stars could be rather safe, as far as collisions while traveling at relativistic speeds.

Then for example let's use the speed of 10%C. In theory, if the spaceship can detect obstacles (using radar?), retro rockets can automatically steer the ship around one object, but probably not find a path through a field of asteroids?

Very good question that I've been wondering about for a long time also. 50% light speed seems a bit unrealistic, maybe 10%. In the movie the speed scale was WAY off. Traveling at 50%C means going so fast that there would be nothing to see. What would really happen, does anyone know? This leads me to believe that a star ship that is on a mission to another star, traveling at a relativistic speed, should have a SHARP shape, made of very tough material (depleted uranium?) so it will simply penetrate and pass through any obstacle. If you are traveling at 50%c and the ship detects a field of asteroids in its' path, or a rogue planet, could the ship fire some retro rockets to push the ship to the side, perpendicular to direction of travel to dodge obstacles? For years my signature was "How do you dodge a bullet when you are traveling at 12%C?"

It seemed like a paradox to me that so many of Trump's followers have no problem with his strange mannerisms, his constant, compulsive self-pep talk. My theory is that a large segment of the population have been conditioned by a salesman syndrome. They like to hear a good sales pitch and will buy the produce just based upon the pitch. Trump is an exaggerated used car salesman like of con artist, almost a cartoon character. He is brilliant at analyzing people and telling them what they want to hear. The way he repeats the mantra "believe me!" almost every sentence. Many people are actually comforted to hear ANYONE say what they want to hear and follow that with the sacred words "believe me!" Hillary Clinton was not very good at that. The most recent really strange thing I heard from Trump comes from a 2013 interview on TV by Wendy Williams when he and Ivanka are both asked what they have in common with each other. Trump answered "Well...I was going to say SEX, but I can't because [unintelligible but sounds like "because I'm related to her"]. That is a clear public admission, IMO, that he has had sex with his daughter, more than once. Not just once but over an unknown period of time. Remember it is what he has in common with his daughter. The fact "sex" is the first thing that pops into his devious little head when asked what he has in common with his daughter is VERY DISTRUBING. Is that something he would lie about? Are Trump's followers aware of this insanity? Listen to the recording. Ivanka just laughs it off. http://www.msn.com/en-in/lifestyle/family/donald-trump%e2%80%99s-disturbing-response-to-what-he-has-in-common-with-ivanka/ar-BBzjgz8

Earth microbes on Mars would only be an issue deep down under ground in lava tubes where there is an environment approaching Earth-like. On the surface, they would be killed, destroyed, and sterilized rapidly.

Smoking in public has always been restricted. There have always been "No smoking" signs in many public places, more so now. It's getting to the point where the question is exactly WHERE is smoking PERMITTED in public?

I first heard this watching Bill Maher's "Make America Sane Again". So I googled it to find this article from 2015. Does anyone dispute this? If this is true, it is amazing that not more is made of this on cable news. "The bloody conflict in Syria—which enters its fifth year this month [ article dated two years ago 3-2-15]—has killed almost 200,000 people, created 3.2 million refugees, and given rise to the murderous extremist group known as the Islamic State. The roots of the civil war extend deep into Syria’s political and socioeconomic structures. But another cause turns out to be global warming. "When violence erupted in Syria during the Arab Spring in 2011, the country had been mired in a three-year drought—its worst in recorded history. Government agricultural policies had led to an overreliance on rain, so desperate farmers had to turn to well water—and they ended up sucking most of the country’s groundwater reserves dry. What happened next upended the country. “A lot of these farmers picked up their families, abandoned their villages, and went en masse to urban areas,” says Colin Kelley, a climate scientist at the University of California, Santa Barbara and author of a new paper on the conflict. Add 1.5 million refugees fleeing the US-led invasion of Iraq, and the population of Syrian cities grew by 50 percent between 2002 and 2010. The influx led to illegal settlements, rampant unemployment, and inequality. But the government hardly did anything in response (corruption didn’t help, nor did the fact that the hardest-hit areas were populated by Kurdish minorities, who have long been discriminated against and ignored). Soon, frustrations boiled over." https://www.wired.com/2015/03/global-warming-helped-cause-syrian-war/

I've had a problem with "Olber's Paradox" based on the results of the Hubble Telescope's deep field image. In a tiny region of apparently black, empty space, when looking long enough, that region is actually populated by thousands of galaxies. So it seems that the night sky would NOT appear bright because most of the infinite number of stars are so far away that they are effectively invisible, even to the Hubble telescope. What am I missing with the "paradox"? https://en.wikipedia.org/wiki/Hubble_Deep_Field If the universe is finite in size, does that mean that infinity does not exist? Could the universe be a finite structure, one of many, contained within an infinite multiverse?

How much damage can N.Korea do on Seoul in a matter of minutes with thousands of artillery and conventional missiles? How difficult is it for N.Korea to float a nuke on a fishing boat into S.Korea? Should we assume they already have a few nukes positioned inside Seoul?

The topic is a speculation. "What was before the BB?" That is meaningless in science. Everything we know about the universe comes from our observations within the observable universe. That is science. Beyond the observable is what, a wall with a sign that says "Edge of Universe"? More likely it continues. We only know about what goes on within the observable universe and we can infer that beyond the observable is much the same, but for how far? When you get out to a distance of a google light years the rules of the game may be different.

All the big bang tells us is about THIS locality of infinity.

The real question is how do SBH become so massive so EARLY in the history of the universe? Not from just eating nearby stars. That is not how they grow to millions or billions of solar masses. They must get most of their mass before giant stars have time to form, explode, and form stellar sized black holes. There must be some kind of direct collapse of giant gas clouds. That means from clouds that REMAIN giant and massive until the critical moment of direct collapse. A documentary I saw on "How the Universe Works" suggests that dark matter may create energy inside the giant, massive cloud that keeps the cloud from collapsing until the critical moment. ​"...Observations reveal that quasars were much more frequent when the Universe was younger, indicating that supermassive black holes formed and grew early." "...primordial black holes may have been produced directly from external pressure in the first moments after the Big Bang." https://en.wikipedia.org/wiki/Supermassive_black_hole#Formation

Thanks Koti, that fixed the problem.

wf: "We believe in DM because the universe HASNT flown apart, yet we believe in DE because the universe IS flying apart" Not exactly. We believe in dark matter because the outer regions of galaxies rotate at nearly the same speed as the inner regions, and galaxy SUPERCLUSTERS do not fly apart, and gravitational lensing. "Although dark matter has not been directly observed, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe's large-scale structure, on galaxies, and its effects in the cosmic microwave background​." https://en.wikipedia.org/wiki/Dark_matter We believe in dark energy because the expansion of the universe appears to be accelerating. Those are not contradictory.

Steve Bannon wants to "deconstruct the administrative state". That can be like eliminating middle management for operational efficiency, but leads to a concentration of power, and in government leads directly to dictatorship in my opinion. http://www.cnn.com/2017/03/30/politics/trump-bannon-administrative-state/index.html

The attack seemed like a fair idea to me, for a "one off". Each Tomahawk cruise missile costs us about $1.6 million, and carries 1,000 pounds of explosives, so the attack cost over $90 million USD to send 59 Tomahawks. That is what a single military action costs the US nowadays. https://en.wikipedia.org/wiki/Tomahawk_(missile)

Then it looks like astronauts on the moon can have an orbiting recreation and sleeping station with artificial gravity, but astronauts on missions to Mars will be deprived of normal gravity for the entire length of their mission, or the remainder of their life if they plan to never return to Earth. It seems like it could be easy to generate one g gravity on the trip to and from Mars, but alas that is probably not going to happen. Right? I believe there are no plans for ANY artificial gravity during missions to Mars.

Your link takes me nowhere in YouTube. Why not post a summary of your opinion?

How about a space elevator? With low gravity, better technology, and an endless supply of water-ice to create hydrogen fuel, maybe launching modest payloads of astronauts from the surface of the moon or Mars into orbit could be a daily routine?

That seems like a great idea to me! That goes also for missions to Mars. First establish orbiting space stations that rotate at 1 g so crews can have comfortable recreational breaks and sleep at normal 1 g. Maybe they work for their shift on the moon or Mars, and then they launch into orbit (or a space elevator) to get 48 hours of R&R at the orbiting space station.

​Yes and both Trump and Kushner had similar upbringing, they inherited real estate empires from their dads. Trump sees himself in Kushner. Ivanka is Trump's favorite daughter-wife but she learned well from her dad that it is not ladylike for a woman to be president. That is why she would probably not run for president, but her husband is just fine, good looking and clean cut, to run after Trump's second term, in 2024. In Trump's mind that will give Kushner plenty of time, 8 years, to learn HOW to be president, not the way he did through painful trial and error. Each day Kushner joins Trump in an important meeting he tells him in advance " just watch and learn". Maybe that is why Kushner is never heard saying anything in the mainstream media.

"Jared Corey Kushner (born January 10, 1981) is an American real estate investor and developer, publisher, and senior advisor to his father-in-law, President Donald Trump. .... Kushner is said to be President Trump's most trusted advisor, showing "unwavering loyalty" to his father-in-law." https://en.wikipedia.org/wiki/Jared_Kushner Anyone else think that the installation of Jared Kushner as senior advisor is really Trump's attempt at establishing a Trump Dynasty? What wise advice can Trump expect from a spoiled 36-year-old whose main experience in life is inheriting his dad's real estate business (just as Trump inherited HIS dad's real estate business)? Kushner looks more like an apprentice to Trump. Jared's job is to learn how to be president, more specifically how to be the next Donald Trump, maybe not such an obnoxious one. Has anyone heard Kushner's voice? I have never heard his voice and I watch cable news almost all day long. Is he the antichrist? What can we expect from him in the future ? since he's going to be around for a long, long time. ​ ​

The moon base should be close to a natural ice supply. The ice is used to make water, and air for breathing, and hydrogen fuel. Use the fuel to power generators. The moon is tidally locked with the earth, so all the moon missions were planned on the day side, because they never stayed long enough to experience the moon night.

"...So, does it mean that S2 orbit deviates from Keplerian ellipse by only 1%? Hence, can we understand that by using pure Keplerian ellipse S2 single point mass deviates from SAG A* location by only 1%?" ​It only means that all the thousands of stellar masses in the region through which S2 is orbiting Sag A add up to 1% of 4 million solar masses, or about 40,000 solar masses. These are all pulling on S2 from thousands of different directions. So it seems hard to tell exactly what stars are pulling on S2. S2 is a heavy star at 15 solar masses. In mid 2018 it will get accelerated up to over 3,000 miles per second, in a short amount of time, as it swings close to Sag A. That should tell us something interesting.