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“It’s an actual piece of physical feedback you can get to help orientate yourself,” says Calahan Young, who is headed to his second Paralympics with the U.S. team.

In gymnastics, gymnasts rely on spotting — meaning focusing on a space to orientate their positioning — to land twists and master balance.

We will first orientate you by showing you an inverted map of North America so the eclipse's point of entry is at the top of the page and the exit at the bottom.

"It helps me orientate myself during mock surgery and helps identify what steps and what stages are coming up next," she says.

Their horizons have no landmarks to hang on to: nothing to orientate yourself toward.