thing.tex

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows.meta}
\begin{document}
\begin{center}

\begin{tikzpicture}[
  myaxis/.style={
   line width = 1pt, -{Stealth[length=3mm]}
  },
  myarrow/.style={
   |-{Stealth[length=3mm]}, line width=0.8pt
  }
]
\coordinate (origo)  at (0,0);
\coordinate (origos) at (7,0);

\draw[myaxis] (origo) -- (3.3,0) node[below]{$x$};
\draw[myaxis] (origo) -- (0,3.3) node[left]{$y$};
\draw[myaxis] (origo) -- (-2,-1.7) node[below]{$z$};
\node at (0.5,3.3) {\textsf{S}};


\draw[myaxis] (origos) -- +(3.3,0) node[below]{$x'$};
\draw[myaxis] (origos) -- +(0,3.3) node[left]{$y'$};
\draw[myaxis] (origos) -- +(-2,-1.7) node[below]{$z'$};
\path (origos) +(0.5,3.3) node {\textsf{S}$^{\prime}$};


\draw[-{Stealth[length=3mm]}, line width=0.8pt](5.5,2.2) -- (8.5,2.2) node[right]{$v$};

\coordinate (sun) at (11,2.2);
\fill[black] (sun) circle (4pt);
\foreach \angle in {0,20,...,359}
  \draw [thick] (sun) ++(\angle:5pt) -- ++(\angle:3pt);


\node at (11,3) {\small \textsf{Begivenhed}};
\node [align=left,right=14pt] at (sun) {%
    \small $(t, \, x, \, y, \, z)$ \\[5pt]
           $(t', \, x', \, y', \, z')$
     };

\draw[myarrow] (0.2,1.4) -- (6.8,1.4) node[above] at (3.5,1.4) {$vt$};
\draw[myarrow] (7.2,1.4) -- (11,1.4) node[above] at (9.1,1.4) {$x^{\prime}$};
\draw[myarrow] (0.2,0.8) -- (11,0.8) node[above] at (5.6,0.76) {$x$};

\end{tikzpicture}

\end{center}
\end{document}