As the title suggests, this massive UFO was actually captured by NASA itself, as you can see in the image below.
It is by far the largest UFO we have ever seen on Earth and, according to most experts, it might even be the mother ship that controls all the UFOs that abduct people on Earth as we know them.
It has been seen hovering above the Earth at an altitude of 250 miles and as you can see it seems to be hiding in the clouds.
Many experts believe that its size makes it quite difficult to maintain camouflage constantly, so it simply prefers to hide in the clouds.
The UFO was actually captured on film by the International Space Station and as you can see it is huge, even bigger than the International Space Station put together.
It is believed to be over two hundred kilometers wide, and as you can see, it is very strange looking.
Many have argued that this may just be a trick of the light or a natural phenomenon surrounding clouds, but so far no one has been able to prove this.
For the most part, it looks like the pictures don’t lie, this is an alien UFO and a huge one too.
Most likely, they are not even friendly because they prefer to hide rather than interact with us.