What did dred scott dare to do in 1846?

Dred Scott filed a very important lawsuit for the history of the United States that ended in 1857 at the US Supreme Court, Scott was an African-American requesting freedom for him, his wife and their children, because they were going to be sold for separated. The Supreme Court resolution was negative for Scott, since he determined that African Americans and their descendants be free or slaves, were not considered citizens.

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.

is there multiple