But That’s Impossible, Part 2

The neutrinos that allegedly travelled faster than light would undermine Einstein’s Theory of Relativity, one of the two foundations of modern science.  Quantum mechanics, the other foundation, is also threatened not by a recent discovery but by the lack of a discovery.  The Higgs Boson is still missing.

In quantum mechanics, everything that happens in physics can be explained by the existence of some particle.  Light and electricity are explained by photons.  Radiation is explained by alpha, beta, and gamma particles.  Mass is explained by the Higgs Boson, also known as the “God Particle,” but after years of searching scientists can’t find it.  They’ve tried almost every energy level where they thought it could be and got nothing.

It’s like when you lose your keys.  First, you look in the most likely places, such as the table by the door or under the sofa cushions.  Then you try less likely places until you’re forced to check in the bathtub or the refrigerator.  In the search for the Higgs Boson, scientists are now looking in the bathtubs and refrigerators of science.

The real shocking discovery would be if they fail to find the Higgs all together.  This would be like deciding the reason you can’t find your keys is because they never existed in the first place.  It wouldn’t make sense.

Failing to find the Higgs means our basic understanding of quantum mechanics is wrong.  It can’t be completely wrong, or nuclear power wouldn’t work, but we’ve messed up some detail somewhere, and scientists will have to go through the long and tedious process of finding that small mistake.  Unless they find the Higgs behind the ketchup in the fridge.

Oh, there they are.

For more information on the search for the hunt for the Higgs Boson, click here.  For more on lost keys, click here.

But That’s Impossible, Part 1

Neutrinos are tiny particles with no electric charge and almost no mass.  They drift through the universe, rarely interacting with ordinary matter, possibly doing weird stuff that’s beyond current science’s power to observe.  But damn it, scientists are determined to observe that weird stuff anyway, and recently they got a real surprise.

Researchers at CERN, one of the world’s leading institutions in particle physics, fired some neutrinos down a long tunnel connecting Geneva, Switzerland to a laboratory in Italy.  The neutrinos arrived a fraction of a second sooner than expected.  In fact, they arrived faster than a beam of light would have.

If this is true, it changes everything we know about physics.  Suddenly, Einstein’s theory of relativity is unreliable, and the speed of light is no longer the intergalactic speed limit.  Maybe we could start building faster than light spaceships powered by neutrinos.

Don’t get your hopes up.  More than likely, this is a mistake in the measurements.  I’ve read enough articles about amazing discoveries that turned out to be false alarms, and I think this one’s a false alarm.

However, there is one thing that does travel faster than light, or at least scientists say it could.  The universe is expanding at an increasing rate, and eventually it will expand faster than the speed of light.  Since space is basically nothing, there is no limit to how fast it can grow.

Now if only we could come up with some way to make space shrink or grow at our command… with some special engine, we could warp space to bring distant objects closer, thus overcoming the limitations set by the speed of light.  A “warp engine” like that would be pretty cool.

For more information about the neutrino experiment, click here.  For more on the expanding universe, click here.  In tomorrow’s post, there will be another discovery—or in this case the lack of a discovery—that could also shake the foundations of science.

Sci Friday – The Sky Is Falling

The six-ton satellite currently falling to Earth has apparently slowed down.  NASA expected it to crash sometime this afternoon, but they now say it will happen tonight or perhaps early tomorrow morning.  Click here for the latest update from Scientific American.

Here are this week’s other sciency links.

The Sky Is Falling

Friday afternoon, a six-ton satellite is expected to fall out of orbit, mostly burning up in the atmosphere.  NASA calculates that twenty-six pieces will survive and crash somewhere on Earth.  Many people are understandably concerned, since there is a chance (a very, very small chance) that one of these pieces might hit someone on the ground.

Get a snapshot view of NASA's Upper Atmosphere Research Satellite (UARS), which will fall to Earth in 2011, in this SPACE.com infographic.
Source: SPACE.com: All about our solar system, outer space and exploration

You’ve probably heard this on the news already, and there are plenty of apps and websites to keep you up to date on the satellite’s status.  But have you wondered what this old, defunct satellite was used for?

The Upper Atmosphere Research Satellite, or UARS, was launched in 1991 to study the ozone layer and determine what was causing it to disappear.  During its 14 years of operation, the UARS collected data proving chlorofluorocarbons (CFCs), used in air conditioning, aerosole sprays, and solvents, were reacting with ozone, destroying ozone molecules faster than natural cycles could replace them.

Since this discovery, 196 countries have signed the Montreal Protocol, agreeing to gradually stop production of CFCs.  The United States has already banned most CFC uses with the Clean Air Act and is starting to ban HCFCs (CFCs with added hydrogen).  According to the EPA, the ozone layer is already starting to recover.

There’s still a lot wrong with our climate, but the Montreal Protocol is a rare success story.  Kofi Annan, the former secretary-general of the United Nations, called it “the single most successful international agreement to date,” and experts estimate that the famous hole in the ozone layer over Antarctica will close sometime in the next 50 to 75 years.

So on Friday if you happen to see the satellite burning through the sky, remember that this isn’t just any old satellite.  This satellite helped make the world a better place.

Links

Space: Closer Than You Think

With NASA’s budget problems and recent technical problems with Russia’s space program, it may seem like humanity’s race into space has run into a snag.  But there is actually tremendous progress being made.  China is moving forward with its own ambitious space program, and private companies in the U.S. are spending a lot of money to build spaceships of their own.

Courtesy: WP Clip Art

You may not be aware of this, but China has been sending people into space since 2003 and conducted its first space walk in 2008.  They’re a little late getting into this game, but they’re catching up fast.  By the end of September, 2011, the Chinese Space Agency says it will put the first segment of a new space station in orbit.

The Chinese space station, named Tiangong or “Heavenly Palace,” will be used to perform microgravity experiments similar to what is done on the International Space Station.  It will be smaller and lighter than the ISS when complete, which is an advantage because it will cost less to launch all the segments.

Meanwhile, a new spaceship factory has opened in the United States.  Located in California, this factory will build ships based on Virgin Galactic’s SpaceShipOne, which won $10 million dollars for being the first privately funded ship to carry a person into space.  Virgin Galactic is part owner of the new factory.

Virgin Galactic primarily aims to make money on space tourism, but the business of space travel has other purposes as well.  NASA still has to get astronauts to the ISS somehow, and for the moment the plan is to use private companies like a taxi service.  Corporations and universities could also use privately owned spaceships to perform microgravity experiments, and in the slightly more distant future, nations and companies might want to harvest passing asteroids for valuable metals.

Books like Ben Bova’s Asteroid Wars and Arthur C. Clarke’s 2001: A Space Odyssey paint a vivid picture of our near future (although Clarke picked the wrong year).  By the end of the century, humanity might not only be exploring and exploiting the solar system, but fighting over it too.

For more on China’s “Heavenly Palace,” click here.

For more on the new spaceship factory in the US, click here.

Sci Friday

This week, NASA launched a new mission to the Moon and announced a new rocket design to take humans as far as Mars.  Also, scientists discovered another planet that just might be able to support life.  I covered those stories in posts earlier this week.  Here’s some of the exciting science news I didn’t talk about.

Life As We Know It

Scientists say they’ve found yet another planet capable of supporting life.  This brings the grand total to three: Earth, Gliese 581 d, and this newly discovered HD 85512 b.  I’m still not sure why we don’t give planets simpler names.  Maybe we’re waiting to ask their inhabitants what they call them.

Learn how the
Source: SPACE.com: All about our solar system, outer space and exploration

Anyway, these planets are special because they reside in their parent stars’ Goldilocks Zones, the region that’s not too hot and not too cold.  For a planet to sustain life-as-we-know-it, it must have a temperature just right for liquid water to flow on the surface.

HD 85512 b is bigger than Earth and probably a bit warmer, but I’m sure the HD 85512 b-ians don’t mind… just as the Gliese 581 d-ians don’t mind the cold.

The quest for life-bearing planets continues, but we also have to consider the possibility of alternative forms of life.  Recent studies suggest arsenic-based and chlorine-based life are possible, and researchers in Scotland are trying to create inorganic life (life with no carbon whatsoever).

Silicon-based life, like the Horta from Star Trek or the creatures from the Aliens movies, still seems unlikely for lots of reasons, but scientists should remain open to that possibility too.

To the best of my knowledge, life based on arsenic, chlorine, and silicon still require liquid water, just like we do (our biochemistry is based on carbon in combination with hydrogen, nitrogen, oxygen, phosphorus, and sulfur).  So these two planets are still special.  But today we know of thousands of planets.  By focusing on only two, we could overlook life-as-we-don’t-know-it.

NASA Makes a Comeback

NASA has unveiled its new rocket design.  Below is an animation of what it will look like.  This monster will have more power than the space shuttle’s booster rockets, more even than the Saturn V used for the Apollo Missions (Saturn V is the most powerful rocket ever put into operation).  It will be ridiculously expensive with a cost estimate of $35 billion (keep in mind NASA’s cost estimates are always wrong) and won’t be ready for at least ten years.

But the Space Launch System, or SLS, isn’t just another space shuttle.  The boring task of putting astronauts in Earth orbit will be left to private companies.  NASA’s new rocket will take humans beyond the Moon.  In other words, we’re going to Mars!

I have to admit I was skeptical when Congress and the Obama Administration shut down the space shuttle program and canceled the next mission to the Moon.  Companies like SpaceX and Virgin Galactic are picking up where they left off, but somehow that just doesn’t feel the same.  For the last year or two, space enthusiasts like myself have only had the International Space Station to be excited about.

According to NASA officials, the first SLS crew is supposed to fly in 2021.  The SLS will send astronauts to an asteroid in 2025, and the first human on Mars will arrive sometime in the 2030’s.  Private companies can worry about traveling to and from Earth orbit while NASA gets to be pioneers.

Fly Me to the Moon

This past weekend (Saturday, September 10th to be exact), NASA launched a new mission to the Moon, and officials say this is the most important Moon mission since the original.  After all, the original only got us information about the Moon’s surface; this time, we’re going to learn about what’s inside.

Two probes, named GRAIL A and GRAIL B, will orbit the Moon, carefully measuring its gravitational field.  From this data, scientists can determine what’s inside.  Does the Moon have magma under its crust, like Earth, or is it solid all the way through?  What elements are in its core, and are they different than what’s found on Earth?  And most importantly, where is all that green cheese we were promised?

But the really cool part of this mission is that middle schoolers from all over the US get to participate.  NASA has set up a program for schools that allows students to select sites on the lunar surface to photograph.

The United States is not doing a great job with science education.  I believe science fiction writers can help by writing stories children enjoy with a sprinkling of real science added in.  But this program, which is called MoonKAM, is even better because it allows children to get involved in the scientific process and experience the thrill of discovery first hand.

For more on MoonKAM, click here.

Sci Friday

Here are this week’s links.