The universe doesn't have an outer perimeter ... For the time being, when we think about shape, we're referring to the geometry of space. For example, on a flat surface, the angles of a triangle ...

This makes our spiral galaxy stand out as an extremely rare outlier with an odd shape that must have some very unique properties ... from the inner galaxy to the outer parts, they bifurcate ...

Humans' ability to sweat is useful on Earth — but when people go up into space, they find that perspiring in zero gravity presents some unique challenges ... to stay in shape both on the ...

As Moon exploration efforts continue taking shape with ambitious plans ... family strives continuously to utilize the unique benefits of outer space for the betterment of all humankind.