The Unicode character U+2001 is referred to as the "Em Quad", belonging to the General Punctuation block within the Unicode standard. An Em Quad is a whitespace character that is one em in width. In typography, an em is a typographic unit that is roughly equivalent to the width of the capital letter "M".
You can copy Em Quad here and use it wherever you like:
| Unicode |   |
|---|---|
| HTML Entity |   |
| LateX | \qquad |
| CSS | \u2001 |