I have the code here
\documentclass{article}
\usepackage{graphicx}
\usepackage{subfigure}
\usepackage{sidecap} %required for side captions
\begin{document}
\begin{figure*}[h]
\begin{minipage}[b]{0.6\textwidth}
\subfigure[A1]{\includegraphics[width=.31\textwidth]{universe}\label{perf_11}}
\subfigure[A2]{\includegraphics[width=.31\textwidth]{universe}\label{perf_33}}
\subfigure[A3]{\includegraphics[width=.31\textwidth]{universe}\label{episodes}}
\caption{It is really a beautiful picture captured by an awesome Telescope}\label{performance}
\end{minipage}
\begin{minipage}[b]{0.4\textwidth}
\subfigure[B1]{\includegraphics[width=.49\textwidth]{universe}\label{33_ab_per}}
\subfigure[B2]{\includegraphics[width=.49\textwidth]{universe}\label{33_ab_ep}}
\caption{Universe}\label{33_sg_per_abla}
\end{minipage}
\end{figure*}
\end{document}
But the figures above do not float at the same level, how can I make it floating the same level?


floatroworadjustbox(see e.g. this answer). And I recommend usingsubcaptioninstead ofsubfigure. – Feb 26 '19 at 05:48[t]instead[b]in both minipages? – Mensch Feb 26 '19 at 05:52