NEW YORK ( TheStreet) -- Popular searches on the Internet include Dexia, as two countries now promise to fight to keep the ailing bank from crumbling.

France and Belgium promised on Tuesday to insure all of Dexia's deposits in an effort to prevent the bank from going under and to assure the bank's clients and creditors their money won't be lost.

Dexia's share price has drastically declined over the past couple of days as investors -- worried about a Greek debt default -- are concerned about the bank's exposure to potentially bad debt from indebted countries.

Bank of New York Mellon ( BK) is also trending as the Justice Department and New York's attorney general have both filed civil lawsuits against the bank, alleging it fraudulently charged clients for currency transactions.

The bank allegedly misrepresented foreign exchange rates on transactions over a 10-year period that ultimately cost institutional clients $2 billion. Prosecutors will reportedly seek hundreds of millions of dollars in penalties and compensation.

NASA is another hot topic after news the space agency is recruiting new astronauts for long missions to the International Space Station and potentially deep space exploration in the future.

Potential recruits must be able to pass the NASA long-duration space flight physical, meet specific height requirements, and have reached at least the science postgraduate level.

With the current lack of spending on space pursuits, new recruits may not get to go on many space missions for the foreseeable future, though they will be trained and ready should funding become available.

NASA will start accepting applications to its astronaut corps in November and final selections for the next astronaut class will be made in 2013. Training will begin in August 2013.

The chatter on Main Street (a.k.a. Google, Yahoo! and other search sites) is always of interest to investors on Wall Street. Thus, each day, TheStreet compiles the stories that are trending on the Web, and highlights the news that could make stocks move.

-- Written by Brittany Umar.
Brittany joined TV in November 2006 after completing a degree in Journalism and Media Studies at Rutgers College. Previously, Brittany interned at the local ABC affiliate in New York City WABC-TV 7 where she helped research and produce On Your Side, a popular consumer advocacy segment.