In 2007, astronomers discovered the Cosmic Horseshoe, a gravitationally lensed system of galaxies about 5.5 billion ...

If you open the Command Prompt, it should be evident that the background color is black. However, there are those who would prefer to change the color but have no idea this is a possibility.

the background on the image should now have a purple tint. Finally, click on Keep Changes to remove the background and keep the foreground. From our experience, Excel is very good at detecting the ...