Showing posts with label Earth. Show all posts
Showing posts with label Earth. Show all posts

Thursday, March 27, 2014

The Coming Paradigm Shift on Climate

The just-published NIPCC reports may lead to a paradigm shift about what or who causes current climate changes.  All the evidence suggests that Nature rules the climate – not Man.
Watch for it: We may be on the threshold of a tipping point in climate history.  No, I’m not talking about a tipping point in the sense that the Earth will be covered with ice or become hellishly hot.  I’m talking about a tipping point in our views of what controls the climate -- whether it’s mainly humans or whether it’s mainly natural.  It makes an enormous difference in climate policy: Do we try to mitigate, at huge cost, or do we merely adapt to natural changes -- as our ancestors did for many millennia?
Such tipping points occur quite frequently in science.  I have personally witnessed two paradigm shifts where world scientific opinion changed rapidly -- almost overnight.  One was in Cosmology, where the “Steady State” theory of the Universe was replaced by the “Big Bang.”  This shift was confirmed by the discovery of the “microwave background radiation,” which has already garnered Nobel prizes, and will likely get more. 
The other major shift occurred in Continental Drift.  After being denounced by the Science Establishment, the hypothesis of Alfred Wegener, initially based on approximate relations between South America and Africa, was dramatically confirmed by the discovery of “sea-floor spreading.” 

Sunday, November 10, 2013

A 2,000-pound satellite may crash in your backyard Sunday night

Who do you sue if you’re hit by a satellite?
A defunct satellite from the European Space Agency the size of a Chevy Suburban is set to plunge to Earth somewhere between Sunday night and Monday afternoon -- and experts say there's no way to precisely determine where it will crash.
GOCE, or Gravity field and steady-state Ocean Circulation Explorer, ran out of gas last month and has been steadily sinking towards the Earth. As the planet rotates, the satellite whizzes over nearly every point on Earth. Experts expect it to plunge harmlessly into the oceans that cover 70 percent of the surface of the planet. But what if it doesn’t? What if it takes out your old Accord?
“Basically, governments are responsible for their own spacecraft,” explained Marcia S. Smith, president of the Space and Technology Policy Group in Arlington, Va. “[If] you could prove a piece of GOCE hit your Honda, you could go to your government to make a claim,” she told FoxNews.com.
But don’t put the ESA’s lawyer on speed dial just yet. Most of the fragments of the satellite are likely to burn up on re-entry, said Heiner Klinkrad, Head of ESA’s Space Debris Office according to an ESA blog.

Monday, August 6, 2012

NASA rover 'Curiosity' lands on Mars


In a show of technological wizardry, the robotic explorer Curiosity blazed through the pink skies of Mars, steering itself to a gentle landing inside a giant crater for the most ambitious dig yet into the red planet's past.

Cheers and applause echoed through the NASA Jet Propulsion Laboratory late Sunday after the most high-tech interplanetary rover ever built signaled it had survived a harrowing plunge through the thin Mars atmosphere.

"Touchdown confirmed," said engineer Allen Chen. "We're safe on Mars."

Minutes after the landing signal reached Earth at 10:32 p.m. PDT, Curiosity beamed back the first black-and-white pictures from inside the crater showing its wheel and its shadow, cast by the afternoon sun.

"We landed in a nice flat spot. Beautiful, really beautiful," said engineer Adam Steltzner, who led the team that devised the tricky landing routine.

Via: Fox News


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Sunday, August 5, 2012

NASA spacecraft speeding toward a landing on Mars


PASADENA, Calif. (AP) — After an 8 1/2-month voyage through space, NASA's souped-up Mars spacecraft zoomed toward the red planet for what the agency hopes will be an epic touchdown.
The fiery punch through the tenuous Martian atmosphere at 13,000 mph Sunday night marks the beginning of "seven minutes of terror" as the Curiosity rover aims for a bull's-eye landing inside a massive crater near the equator.
The latest landing attempt is more nerve-racking than in the past because NASA is testing out a new routine. Curiosity will steer itself part of the way and end on a dramatic note: Dangling by cables until its six wheels touch the ground.
That's the plan at least.
"Can we do this? Yeah, I think we can do this. I'm confident," Doug McCuistion, head of the Mars exploration program at NASA headquarters, said Saturday. "We have the A-plus team on this. They've done everything possible to ensure success, but that risk still exists."

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