Writing Lines and Lines of Math Without Continuation Characters

Question

I've recently converted to using \[ \] instead of $$ $$ as my begin/end math command since I read that is the "correct" method. However, the backslash character is near my pinky on my keyboard and typing that every single line is getting my pinky fatigued.

Is there some sort of multiline equation command/environment in LaTeX similar to how many programming languages have multiline comments?

That is, I currently have:

\[ r \approx R_{\odot}/2 \]
\[ T \approx 10^{7} K \]
\[ M \approx \frac{1}{2} M_{\odot} \]
\[ l \approx R_{\odot}/20 \]
\[ H = \frac{L_{\odot}}{4 \pi r^{2}} \]
\[ \Delta \nabla T \approx 2 \times 10^{-10} \]
\[ \frac{dT}{dr} \approx \frac{\bar{T}}{R_{\odot}} \approx 6 \times 10^{-5} \]

whereas I would like something of the form

\begin{math}
r \approx R_{\odot}/2
T \approx 10^{7} K
M \approx \frac{1}{2} M_{\odot}
l \approx R_{\odot}/20
H = \frac{L_{\odot}}{4 \pi r^{2}}
\Delta \nabla T \approx 2 \times 10^{-10}
\frac{dT}{dr} \approx \frac{\bar{T}}{R_{\odot}} \approx 6 \times 10^{-5}
\end{math}

Please note that amsmath's align and gather don't fit the bill for me since they require two backslashes at the end of each line.

I'm open to source modification solutions.

Also, I'm using the article documentclass (if it matters).

Answer 1

I think gathered can help you

\documentclass{article}

\usepackage{amsmath}

\begin{document}

\begin{equation}
    \begin{gathered}
        r \approx R_{\odot}/2 \\
        T \approx 10^{7} K \\
        M \approx \frac{1}{2} M_{\odot} \\
        l \approx R_{\odot}/20 \\
        H = \frac{L_{\odot}}{4 \pi r^{2}} \\
        \Delta \nabla T \approx 2 \times 10^{-10} \\
        \frac{dT}{dr} \approx \frac{\bar{T}}{R_{\odot}} \approx 6 \times 10^{-5}
    \end{gathered}
\end{equation}

\end{document}

I do agree with comments because \\ are necessary in LaTeX. You will take the habits :)