diff --git a/Hausaufgaben/apollo/.env b/Hausaufgaben/apollo/.env
new file mode 100644
index 0000000..c8249df
--- /dev/null
+++ b/Hausaufgaben/apollo/.env
@@ -0,0 +1,20 @@
+# Anzeige
+WIDTH=800
+HEIGHT=600
+FPS=60
+BG_COLOR=#0a0a14
+
+# Erde
+EARTH_COLOR=#2878ff
+EARTH_RADIUS=30
+
+# Mond
+MOON_COLOR=#f0f0f0
+MOON_RADIUS=10
+MOON_ORBIT_RADIUS=160
+MOON_ANGULAR_SPEED_DEG=45   # Grad/Sekunde
+
+# Apollo (optional, nur falls apollo.py genutzt wird)
+APOLLO_COLOR=#dc3232
+APOLLO_RADIUS=7
+APOLLO_ORBIT_RADIUS=40
diff --git a/Hausaufgaben/apollo/1. Apollo.py b/Hausaufgaben/apollo/1. Apollo.py
new file mode 100644
index 0000000..705ca83
--- /dev/null
+++ b/Hausaufgaben/apollo/1. Apollo.py	
@@ -0,0 +1,42 @@
+from __future__ import annotations
+import math
+from typing import Tuple, List
+import pygame  # type: ignore
+
+from moon import Moon
+import compute
+
+
+class Apollo(Moon):
+    """Fügt die Apollo-Kapsel hinzu; liest alle Werte aus Settings (env)."""
+
+    def get_apollo_angle(self) -> float:
+        return -2.0 * self.get_moon_angle()
+
+    def get_apollo_position(self) -> Tuple[int, int]:
+        theta = self.get_apollo_angle()
+        r = float(self.settings.apollo_orbit_radius)
+        rot: List[List[float]] = [
+            [math.cos(theta), -math.sin(theta)],
+            [math.sin(theta),  math.cos(theta)],
+        ]
+        vec: List[List[float]] = [[r], [0.0]]
+        res = compute.matmul(rot, vec)
+        mx, my = self.get_moon_position()
+        return int(mx + res[0][0]), int(my + res[1][0])
+
+    def draw(self, surface: pygame.Surface) -> None:
+        super().draw(surface)
+        pygame.draw.circle(
+            surface, (90, 50, 50), self.get_moon_position(), self.settings.apollo_orbit_radius, width=1
+        )
+        ax, ay = self.get_apollo_position()
+        pygame.draw.circle(surface, self.settings.apollo_color, (ax, ay), self.settings.apollo_radius)
+
+
+if __name__ == "__main__":
+    Apollo().run()
+
+    #created by chat
+
+
diff --git a/Hausaufgaben/apollo/compute.py b/Hausaufgaben/apollo/compute.py
new file mode 100644
index 0000000..f0e8dcb
--- /dev/null
+++ b/Hausaufgaben/apollo/compute.py
@@ -0,0 +1,69 @@
+from typing import List
+
+def matmul(A: List[List[float]], B: List[List[float]]) -> List[List[float]]:
+    """
+    Multiplies two matrices A and B (nested Python lists).
+
+    Requirements:
+      - A has shape (m x n), B has shape (n x p).
+      - All rows in A and B must have equal length.
+      - Elements are numeric (float/int).
+
+    Args:
+        A: Left matrix, list of rows (m x n).
+        B: Right matrix, list of rows (n x p).
+
+    Returns:
+        New matrix C = A * B with shape (m x p).
+
+    Raises:
+        ValueError: If matrices are empty, ragged,
+                    or shapes are incompatible.
+
+    """
+    if not A or not B:
+        raise ValueError("Empty matrices are not supported.")
+    if not A[0] or not B[0]:
+        raise ValueError("Matrices must have at least one column.")
+
+    a_cols = len(A[0])
+
+    for row in A:
+        if len(row) != a_cols:
+            raise ValueError("Left matrix has inconsistent row lengths.")
+    b_cols = len(B[0])
+    for row in B:
+        if len(row) != b_cols:
+            raise ValueError("Right matrix has inconsistent row lengths.")
+
+    if a_cols != len(B):
+        raise ValueError(
+            f"Incompatible shapes: A is {len(A)}x{a_cols}, "
+            f"B is {len(B)}x{b_cols}; need cols(A) == rows(B)."
+        )
+
+    m, n, p = len(A), a_cols, b_cols
+    C: List[List[float]] = [[0 for _ in range(p)] for _ in range(m)]
+
+    for i in range(m):
+        for k in range(n):
+            a_ik = A[i][k]
+            for j in range(p):
+                C[i][j] += a_ik * B[k][j]
+
+    return C
+
+
+if __name__ == "__main__":
+    matrix_a = [[3, 4, -1, 4],
+                [-2, 2, 5, 1]]
+    matrix_b = [[1, 3, -2],
+                [2, 5, 1],
+                [-1, 4, -4],
+                [2, 3, 6]]
+    matrix_c = matmul(matrix_a, matrix_b)
+    print("Ergebnis C = A * B:")
+    for row in matrix_c:
+        print(row)
+
+
diff --git a/Hausaufgaben/apollo/config.py b/Hausaufgaben/apollo/config.py
new file mode 100644
index 0000000..635364c
--- /dev/null
+++ b/Hausaufgaben/apollo/config.py
@@ -0,0 +1,101 @@
+"""Konfigurations-Loader für das Moon/Apollo-Projekt.
+"""
+
+from __future__ import annotations
+
+import os
+import re
+from dataclasses import dataclass
+from typing import Tuple
+
+from dotenv import load_dotenv
+
+load_dotenv(override=False)
+
+
+def _get_env(name: str, default: str) -> str:
+    val = os.getenv(name)
+    return val if val is not None and val != "" else default
+
+
+def _parse_int(name: str, default: int, min_val: int | None = None) -> int:
+    raw = _get_env(name, str(default))
+    try:
+        v = int(raw)
+        if min_val is not None and v < min_val:
+            raise ValueError
+        return v
+    except Exception as _:
+        return default
+
+
+def _parse_float(name: str, default: float, min_val: float | None = None) -> float:
+    raw = _get_env(name, str(default))
+    try:
+        v = float(raw)
+        if min_val is not None and v < min_val:
+            raise ValueError
+        return v
+    except Exception as _:
+        return default
+
+
+_HEX = re.compile(r"^#?([0-9a-fA-F]{6})$")
+
+
+def _parse_rgb(name: str, default_hex: str) -> Tuple[int, int, int]:
+    """Erlaubt '#rrggbb' oder 'rrggbb'. Fällt auf default zurück, wenn ungültig."""
+    raw = _get_env(name, default_hex)
+    m = _HEX.match(raw)
+    hx = m.group(1) if m else default_hex.lstrip("#")
+    r = int(hx[0:2], 16)
+    g = int(hx[2:4], 16)
+    b = int(hx[4:6], 16)
+    return (r, g, b)
+
+
+@dataclass(frozen=True)
+class Settings:
+    # Anzeige
+    width: int
+    height: int
+    fps: int
+    bg_color: Tuple[int, int, int]
+
+    # Erde
+    earth_color: Tuple[int, int, int]
+    earth_radius: int
+
+    # Mond
+    moon_color: Tuple[int, int, int]
+    moon_radius: int
+    moon_orbit_radius: int
+    moon_angular_speed_deg: float  # Grad/Sekunde
+
+    # Apollo (optional)
+    apollo_color: Tuple[int, int, int]
+    apollo_radius: int
+    apollo_orbit_radius: int
+
+
+def get_settings() -> Settings:
+    """Erzeugt Settings aus Umgebungsvariablen oder Defaults."""
+    return Settings(
+        # Anzeige
+        width=_parse_int("WIDTH", 800, min_val=100),
+        height=_parse_int("HEIGHT", 600, min_val=100),
+        fps=_parse_int("FPS", 60, min_val=1),
+        bg_color=_parse_rgb("BG_COLOR", "#0a0a14"),
+        # Erde
+        earth_color=_parse_rgb("EARTH_COLOR", "#2878ff"),
+        earth_radius=_parse_int("EARTH_RADIUS", 30, min_val=1),
+        # Mond
+        moon_color=_parse_rgb("MOON_COLOR", "#f0f0f0"),
+        moon_radius=_parse_int("MOON_RADIUS", 10, min_val=1),
+        moon_orbit_radius=_parse_int("MOON_ORBIT_RADIUS", 160, min_val=10),
+        moon_angular_speed_deg=_parse_float("MOON_ANGULAR_SPEED_DEG", 45.0, min_val=0.1),
+        # Apollo
+        apollo_color=_parse_rgb("APOLLO_COLOR", "#dc3232"),
+        apollo_radius=_parse_int("APOLLO_RADIUS", 7, min_val=1),
+        apollo_orbit_radius=_parse_int("APOLLO_ORBIT_RADIUS", 40, min_val=5),
+    )
diff --git a/Hausaufgaben/apollo/game.py b/Hausaufgaben/apollo/game.py
new file mode 100644
index 0000000..bcaccdc
--- /dev/null
+++ b/Hausaufgaben/apollo/game.py
@@ -0,0 +1,31 @@
+import pygame
+
+class Game:
+    def __init__(self, width=800, height=600, fps=60, title="Game"):
+        pygame.init()
+        self.width = width
+        self.height = height
+        self.fps = fps
+        self.title = title
+        self.screen = pygame.display.set_mode((width, height))
+        pygame.display.set_caption(title)
+        self.clock = pygame.time.Clock()
+        self.running = True
+
+    def run(self):
+        """Startet die Hauptschleife."""
+        while self.running:
+            dt = self.clock.tick(self.fps) / 1000  # Zeit seit letztem Frame
+            for event in pygame.event.get():
+                if event.type == pygame.QUIT:
+                    self.running = False
+            self.update(dt)
+            self.draw(self.screen)
+            pygame.display.flip()
+        pygame.quit()
+
+    def update(self, dt: float):
+        pass
+
+    def draw(self, surface: pygame.Surface):
+        pass
diff --git a/Hausaufgaben/apollo/moon.py b/Hausaufgaben/apollo/moon.py
new file mode 100644
index 0000000..4be72ee
--- /dev/null
+++ b/Hausaufgaben/apollo/moon.py
@@ -0,0 +1,64 @@
+from __future__ import annotations
+import math
+from typing import Tuple, List
+import pygame  # type: ignore
+
+from game import Game
+import compute
+from config import get_settings
+
+
+class Moon(Game):
+    """Unterklasse von Game: Animation Mond-um-Erde mit .env-Konfiguration."""
+
+    def __init__(self) -> None:
+        self.settings = get_settings()
+        super().__init__(
+            width=self.settings.width,
+            height=self.settings.height,
+            fps=self.settings.fps,
+            title="Moon Orbit (env-configured)",
+        )
+        self._theta: float = 0.0
+        self._center: Tuple[float, float] = (self.width / 2, self.height / 2)
+w
+    def get_earth_center(self) -> Tuple[float, float]:
+        return self._center
+
+    def get_moon_angle(self) -> float:
+        return self._theta
+
+    def get_moon_orbit_radius(self) -> int:
+        return self.settings.moon_orbit_radius
+
+    def get_moon_position(self) -> Tuple[int, int]:
+        theta = self.get_moon_angle()
+        r = float(self.get_moon_orbit_radius())
+        rot: List[List[float]] = [
+            [math.cos(theta), -math.sin(theta)],
+            [math.sin(theta),  math.cos(theta)],
+        ]
+        vec: List[List[float]] = [[r], [0.0]]
+        res = compute.matmul(rot, vec)
+        cx, cy = self.get_earth_center()
+        return int(cx + res[0][0]), int(cy + res[1][0])
+
+    def update(self, dt: float) -> None:
+        omega = math.radians(self.settings.moon_angular_speed_deg)
+        self._theta = (self._theta + omega * dt) % (2.0 * math.pi)
+
+    def draw(self, surface: pygame.Surface) -> None:
+        s = self.settings
+        surface.fill(s.bg_color)
+
+        ex, ey = self.get_earth_center()
+        pygame.draw.circle(surface, s.earth_color, (int(ex), int(ey)), s.earth_radius)
+
+        pygame.draw.circle(surface, (60, 60, 80), (int(ex), int(ey)), s.moon_orbit_radius, width=1)
+
+        mx, my = self.get_moon_position()
+        pygame.draw.circle(surface, s.moon_color, (mx, my), s.moon_radius)
+
+
+if __name__ == "__main__":
+    Moon().run()