Solar eclipse coming to US on April 8th- NASA has issued a warning 

Solar eclipse coming April 8th 

Millions could be in darkness, but experts warn of a big risk. 

88% of US adults watched the last one 

Full eclipse creates darkness in a narrow path 

Special glasses are required to view safely 

Looking without them can cause permanent eye damage 

Texas likely to have cloudy skies during the eclipse 

New York is expected to have the best viewing conditions