Program Space;
  Uses Graph, Crt;
  Const
    RadOrb = 250;  RadSun = 70;
    RadGal = 100;  RadZem = 18;
    Naklon = 0.2;
    PressZem = 0.65;
    Compress = 0.8;

  Var
    ZemX, ZemY, UgMer,  PixelY,  DUgZem ,  UpDown,
    XRad, Grad, UgZem,  PixelX,  StAngle,  Ua, Ub,
    ParallelY,  Color,  ZemPix,  EndAngle,
    VisualPage, GrMode, GrError, GrDriver, i : Integer;
    Ugol,  CompressZem, Expansion,
    DUgol, Projection,  PolUgol              : Real;
BEGIN

  GrDriver := EGA; GrMode := EGAHi;
  InitGraph(GrDriver, GrMode, 'C:\TP\BGI');
  GrError := GraphResult; If GrError<>GrOk then Halt;

  SetBkColor(Black);
  SetFillStyle(1, Yellow);
  Ugol := 0; DUgol := 2*Pi/180;
  UgZem := 0; DUgZem := 14;

  VisualPage := 1;
  Repeat
    SetVisualPage(1- (VisualPage mod 2));

    VisualPage := VisualPage+1;
    SetActivePage(1 - (VisualPage mod 2));

    ClearDevice;


    RandSeed:=1;
    Expansion:=VisualPage/100;
    For i:= 1 to VisualPage do
      begin XRad := Trunc(Expansion*RadGal*Random);

         PolUgol:= 2*Pi*Random-VisualPage/30;

         PixelX := 370+Trunc(XRad*cos(PolUgol+1.8));
         PixelY := 250+Trunc(XRad*0.5*sin(PolUgol));
         PutPixel(PixelX, PixelY, White)
      end;


    Randomize;

    For i:=1 to 70 do
      PutPixel(Random(640),Random (350),White);

    For i := 1 to 100 do
      PutPixel(320+Round(RadOrb * cos((i+VisualPage/5)*Pi/50+0.3)),
      160+Round(RadOrb*Naklon*sin((i+VisualPage/5)*Pi/50-Pi/2)),15);

    PieSlice(310, 160, 0, 360, RadSun);

    Ugol := Ugol+DUgol;
    Grad := Round(180*Ugol/Pi) mod 360;
    ZemX := 320+Round(RadOrb*cos((Ugol+Pi/2+0.3)));
    ZemY:=160+Round(RadOrb*Naklon*sin(Ugol));
    CompressZem := 2.5-cos(Ugol+0.3);

    ZemPix := Round(RadZem*CompressZem);
    UgZem := UgZem+DUgZem;

    For i := 0 to 11 do
     begin
      UgMer := (UgZem+i*30) mod 360;
      If (90<UgMer) and (UgMer<270)
        then begin StAngle := 90; EndAngle := 270 end
        else begin StAngle := 270; EndAngle := 90 end;
      Ua := (Grad+220) mod 360; Ub := (Grad+400) mod 360;


      Color := LightBlue;
      If Ua<=Ub then if (Ua<UgMer) and (UgMer<Ub) then Color := White;
      If Ua >Ub then if (Ua<UgMer) or  (UgMer<Ub) then Color := White;
      SetColor(Color);
      XRad := round((ZemPix*cos(UgMer*Pi/180)));
      Ellipse(ZemX,ZemY,StAngle,EndAngle,abs(XRad),round(PressZem*ZemPix));
     end;

    For i := 2 to 7 do
      begin
        XRad := abs(Round(ZemPix*sin(i*Pi/9)));

        UpDown := Round(ZemPix*PressZem*cos(i*Pi/9));

        ParallelY := ZemY+UpDown;
        SetColor(LightBlue);
        Ellipse(ZemX, ParallelY, 0, 360, XRad, Round(Naklon*XRad));

        SetColor(White);
        Ellipse(ZemX,ParallelY,Grad+220,Grad+400,XRad,Round(Naklon*XRad));

      end;

    If CompressZem<2 then PieSlice(310, 160, 0, 360, RadSun);

    RandSeed := VisualPage mod 12;
    For i := 1 to 250 do
      begin
         Projection := (1-sqr(Random))*Pi/2;
         XRad := RadSun+Round((20)*sin(Projection))-15;
         PolUgol := 2 * Pi * Random+VisualPage/20;

         PixelX := 310 + Round( XRad * cos(PolUgol));
         PixelY := 160 + Round( Compress * XRad * sin(PolUgol));
         PutPixel(PixelX, PixelY, LightRed)
      end;
  until KeyPressed
END.