Setup Test UI and Added Prototype DataGrid

Stars Assistant/Views/MainWindow.axaml

@@ -27,6 +27,26 @@
             <TextBox Grid.Row="1"  Grid.Column="1" Margin="0 5" Text="0" Name="fahrenheit"/>
             <Button Grid.Row="2" Grid.Column="1" Margin="0 5" Click="ButtonClicked">Calculate</Button>
         </Grid>
+        <DataGrid Margin="20" ItemsSource="{Binding Planets}"   
+            AutoGenerateColumns="True" IsReadOnly="True" 
+            GridLinesVisibility="All"
+            BorderThickness="1" BorderBrush="Gray">
+        </DataGrid>
+
+        <!-- ScrollViewer>
+            <ItemsControl ItemsSource="{Binding Planets}">
+                <ItemsControl.ItemTemplate>
+                    <DataTemplate DataType="vm:PlanetViewModel">
+                        <Grid ColumnDefinitions="200, 100, 50">
+                            <TextBlock Grid.Column="0" Text="{Binding Name}"/>
+                            <TextBlock Grid.Column="1" Text="{Binding Owner}"/>
+                            <TextBlock Grid.Column="2" Text="{Binding Value}"/>
+                        </Grid>
+                    </DataTemplate>
+                </ItemsControl.ItemTemplate>
+            </ItemsControl>
+        </ScrollViewer-->
+
   </StackPanel>
 
 </Window>