There are UFOs that are probably using the energy of the sun, says a hunter who is known as Streetcap1 in YouTube.

This theory was put out after Streetcap1 saw an eccentric object with a line of "plasma" running from the Sun. These images were seen through NASA telescopic images of the solar surface.

One video was uploaded on YouTube, with the title: 'Is this a massive UFO feeding off sun energy?'

In a promotional blurb for the video, he wrote: "The fact that the UFO is a different color and shape to the rest of the connected line is what convinced me to upload this. I was not a great believer in this plasma sun energy theory, but this has got me thinking."

It has been suggested by a number of experts that life can live off just the sun's cosmic rays. Says pc-tablet: "Cosmic rays can penetrate deep into the earth and bacteria living deep in the bowels of Earth where there is water could be munching on cosmic rays to survive. Such a situation can occur in Mars also deep underground where there is the presence of water. Life could be possible on other planets also. One such place where there is water below the surface is Europa where there is a possibility of life."

The idea sounds bizarre but has promise. The Streetcap1 video was picked up the UFO blogger Scott C Waring. He wrote: "This UFO shot out of the sun yesterday but was seen by Streetcap1 of Youtube. The UFO may have been using the suns energy to fuel itself or to recharge in some way, but it's leaving at high speed. Notice that the UFO is a glowing white, but the sun's plasma is yellow. This tells us the craft is made from a different material than the sun's surface."

Another Nasa image, shot by the Solar and Heliospheric Observatory (SOHO), a spacecraft with a telescopic camera, sent out an image to the sun and beamed back high detail images. It showed shots of giant UFOs that were rotating around the sun.

The blogger said on his website that some of the UFOs were almost as big as our earth. His blog was titled 'Hundreds of Giant UFOs Orbiting Our Sun, NASA/SOHO Images Confirm'.

He wrote: "While looking over some SOHO images I decided to enlarge some of the UFOs in the photo. I was not a great believer in this plasma sun energy theory, but this has got me thinking. Now please know, the UFOs in each photo are different because the sun is rotating, and there are a lot of moon size and earth size UFOs around our sun.

"Back about 10 years ago, two Russian scientists announced that they have found hundreds of UFOs orbiting Earth's sun at any given moment in time. And that these UFOs can increase and decrease speeds for no reason, and that they can make sudden right turns at speeds that should be impossible, especially for a moon size UFO.

"Now, are these unmanned giant drones sent to get energy for planets far away? I would say yes, but they don't have to be unmanned if their technology can protect them from the incredible heat."

The theory is shared by a number of UFOlogists. However, the sceptics too have a lot to say. As the telescope is so huge, they are just "out-of-focus anomalies appearing to give such shapes in the final image," said one critic.

The critics also say that the objects around the sun are merely "coronal mass ejections from the sun." These are strange and unusual releases of plasma and magnetic fields from the solar corona and tend to follow solar flares.