Robert Ballard is my hero. Dr. Ballard is a scientist, inventor,
and a deep-sea explorer. He is most famous for discovering the
wreck of the Titanic, 12,460 feet beneath the sea. The Titanic
was the largest ship ever built in her time. She was as tall as
an eleven story building and almost four city blocks long. The
unique design of her hull was supposed to make her unsinkable,
but in the middle of her first voyage the huge ship struck an
iceberg and sank in the dark, icy waters of the Atlantic Ocean
on April 15, 1912. Only 705 of the Titanic's 2,223 passengers
and crew survived. Ever since the Titanic sank, people have been
fascinated with the story and many have wondered about the
location of the monster ship on the ocean floor. Seventy-four
years later, Bob Ballard led a team of scientists in a mission
to discover the lost Titanic. Using Argo, the deep sea
underwater robot craft Dr. Ballard developed, tethered to a
research vessel called the Knorr, the team explored the region
of the ocean where the ship w