Aboard the Atlanta flight, teachers screamed in delight and amazement as they defied gravity.

CNN: Teachers take weightless ride to inspire students

Apple, once again, defied gravity and reported earnings that surprised even the greatest bulls on Wall Street.

FORBES: Apple: Don't Miss the Next $200 Price Move

Worthington Industries seemingly defied gravity by posting a blowout quarter amidst rising steel prices and a flagging economy.

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High-fliers like LinkedIn, Pandora, Zillow and HomeAway had valuations that ranged from 5 to 15x projected revenue and defied gravity.

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With the U.S. major stock market indexes falling hard since early May, most of the large institutional investors, spooked by the slowdown in the economic recovery, have refocused their sights toward markets where growth has defied gravity: the emerging countries, specifically Brazil, Chile, Hong Kong, Peru, Uruguay and Singapore.

FORBES: Fast Growing Emerging Markets Are Again Attracting Investors As U.S. Economic Recovery Sputters

These are just some of the momentum stocks that defied the laws of gravity for months, but finally fell back to Earth in recent sessions.

FORBES: Apple, Priceline And The Perils Of Momentum Stocks

"Canadian employment not only defied expectations in December, it also appears to be defying gravity, " said Doug Porter, the Bank of Montreal's deputy chief economist.

BBC: US unemployment rate holds steady in December at 7.8%