
The Bristol International Balloon Fiesta will see some hundreds of balloons floating in the skies of southwest England over the two-week festival. (Ben Birchall/PA via AP)
A balloon takes off during the first mass ascent of the 'Fiesta Fortnight' in Filton, England. (Ben Birchall/PA via AP)
A crew member inspects a partially inflated hot air balloon at the Bristol International Balloon Fiesta in Bristol, Britain. (Source: REUTERS/Henry Nicholls)
Hot air balloons launch during a mass take off at the Bristol International Balloon Fiesta in Bristol, Britain. (Source: REUTERS/Henry Nicholls)
A hot-air balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. (Source: REUTERS/Henry Nicholls)
Look at the spectacle. (Source: REUTERS/Henry Nicholls)
The source of heat is an open flame caused by burning liquid propane. (Source: Ben Birchall/PA via AP)
Balloon pilots check the rigging inside a balloon canopy as they prepare for the first mass ascent during 'Fiesta Fortnight' in Filton, England. (Source: Ben Birchall/PA via AP)
Wow! (Source: Ben Birchall/PA via AP)