diff --git a/doc/release-notes/rl-2511.section.md b/doc/release-notes/rl-2511.section.md
index c50ae7739abd..d87d4348d8fb 100644
--- a/doc/release-notes/rl-2511.section.md
+++ b/doc/release-notes/rl-2511.section.md
@@ -17,6 +17,7 @@
 
 - `base16-builder` node package has been removed due to lack of upstream maintenance.
 - `gentium` package now provides `Gentium-*.ttf` files, and not `GentiumPlus-*.ttf` files like before. The font identifiers `Gentium Plus*` are available in the `gentium-plus` package, and if you want to use the more recently updated package `gentium` [by sil](https://software.sil.org/gentium/), you should update your configuration files to use the `Gentium` font identifier.
+- `space-orbit` package has been removed due to lack of upstream maintenance. Debian upstream stopped tracking it in 2011.
 
 ## Other Notable Changes {#sec-nixpkgs-release-25.11-notable-changes}
 
diff --git a/pkgs/by-name/sp/space-orbit/package.nix b/pkgs/by-name/sp/space-orbit/package.nix
deleted file mode 100644
index a39816fafcc1..000000000000
--- a/pkgs/by-name/sp/space-orbit/package.nix
+++ /dev/null
@@ -1,66 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  libGLU,
-  libGL,
-  libXi,
-  libXt,
-  libXext,
-  libX11,
-  libXmu,
-  libglut,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "space-orbit";
-  version = "1.01";
-  patchversion = "9";
-
-  buildInputs = [
-    libGLU
-    libGL
-    libXi
-    libXt
-    libXext
-    libX11
-    libXmu
-    libglut
-  ];
-
-  src = fetchurl {
-    url = "mirror://debian/pool/main/s/space-orbit/space-orbit_${version}.orig.tar.gz";
-    sha256 = "1kx69f9jqnfzwjh47cl1df8p8hn3bnp6bznxnb6c4wx32ijn5gri";
-  };
-
-  patches = [
-    (fetchurl {
-      url = "mirror://debian/pool/main/s/space-orbit/space-orbit_${version}-${patchversion}.diff.gz";
-      sha256 = "1v3s97day6fhv08l2rn81waiprhi1lfyjjsj55axfh6n6zqfn1w2";
-    })
-  ];
-
-  preBuild = ''
-    cd src
-    sed -e 's@/usr/share/games/orbit/@'$out'/dump/@g' -i *.c
-    sed -e '/DIR=/d; s/-lesd//; s/-DESD//;' -i Makefile
-  '';
-
-  installPhase = ''
-        mkdir -p $out/bin
-        cp -r .. $out/dump
-        cat >$out/bin/space-orbit <<EOF
-    #! ${stdenv.shell}
-    exec $out/dump/orbit "\$@"
-    EOF
-        chmod a+x $out/bin/space-orbit
-  '';
-
-  meta = with lib; {
-    broken = stdenv.hostPlatform.isDarwin;
-    description = "Space combat simulator";
-    mainProgram = "space-orbit";
-    license = licenses.gpl2Plus;
-    platforms = platforms.all;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 9938b5949b9a..be1f35939b15 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1781,6 +1781,7 @@ mapAliases {
   SP800-90B_EntropyAssessment = sp800-90b-entropyassessment; # Added on 2024-06-12
   SPAdes = spades; # Added 2024-06-12
   spark2014 = gnatprove; # Added 2024-02-25
+  space-orbit = throw "'space-orbit' has been removed because it is unmaintained; Debian upstream stopped tracking it in 2011."; # Added 2025-06-08
   spatialite_gui = throw "spatialite_gui has been renamed to spatialite-gui"; # Added 2025-01-12
   spatialite_tools = throw "spatialite_tools has been renamed to spatialite-tools"; # Added 2025-02-06