SOHO stands for Solar and Heliospherical Laboratory and LASCO stands for Large Angle Spectrometric Coronagraph.
This is a video taken from SOHO LASCO.
The site responsible for explaining it to us says:
“[SOHO LASCO] is able to take images of the solar corona by blocking the light coming directly from the Sun with an occulter disk, creating an artificial eclipse within the instrument itself. The position of the solar disk is indicated in the images by the white circle. The most prominent feature of the corona are usually the coronal streamers, those nearly radial bands that can be seen both in C2 and C3. Occasionally, a coronal mass ejection can be seen being expelled away from the Sun and crossing the fields of view of both coronagraphs. The shadow crossing from the lower left corner to the center of the image is the support for the occulter disk.
“C2 images show the inner solar corona up to 8.4 million kilometers (5.25 million miles) away from the Sun.”
Now, look at the object that shows up on this SOHO LASCO image. I actually have no idea how big it must be but I assume it is very large, Imagine the heat that must prevail in this area of space, so near to the Sun.
What can that object be? And what’s it doing there?