Space now has an immutable, cold atmosphere.

Content.Server/GameObjects/Components/Atmos/SpaceGridAtmosphereComponent.cs

@@ -0,0 +1,30 @@
+#nullable enable
+using System.Collections.Generic;
+using System.Linq;
+using Content.Server.Atmos;
+using Robust.Shared.Map;
+
+namespace Content.Server.GameObjects.Components.Atmos
+{
+    public class SpaceGridAtmosphereComponent : UnsimulatedGridAtmosphereComponent
+    {
+        public override string Name => "SpaceGridAtmosphere";
+
+        public override void RepopulateTiles() { }
+
+        public override bool IsSpace(MapIndices indices)
+        {
+            return true;
+        }
+
+        public override TileAtmosphere? GetTile(MapIndices indices, bool createSpace = true)
+        {
+            return new TileAtmosphere(this, GridId.Invalid, indices, new GasMixture(2500, AtmosphereSystem), true);
+        }
+
+        protected override IEnumerable<AirtightComponent> GetObstructingComponents(MapIndices indices)
+        {
+            return Enumerable.Empty<AirtightComponent>();
+        }
+    }
+}