While it is winter in the southern hemisphere, Brazil is sandwiched between the Tropic of Capricorn and the Equator.

FORBES: Snow in Brazil, Blazing Heat in US as Climate Change Continues

If it succeeds in crossing the Atlantic, it will then try to circle the globe, following the Tropic of Cancer and landing on each continent.

ECONOMIST: Solar-powered manned flight

The Tropic of Cancer and the Tropic of Capricorn?

NEWYORKER: Amundsen

The star of "Tropic Thunder" is nominated for his first Oscar in 16 years.

CNN: Oscar nomination a 'surreal' experience

Advocacy groups have urged a boycott of "Tropic Thunder" because of the repeated use of the word "retard, " when Mr. Downey's character gives Tugg an acting tutorial.

WSJ: 'Vicky Cristina' Is Slim, Charming Allen Roundelay

But, he said, "Tropic Thunder" is a long way from the days when white performers would don blackface as a way of exploiting black stereotypes.

CNN: 'Tropic Thunder' pushes envelope and then some