Can one use the Hubble to look for Vulcanoids?
Unfortunately, one cannot use the Hubble to look for Vulcanoids. The Hubble exquisitely sensitive detectors would be destroyed by sunlight if the space-based telescope were pointed at locations close to the Sun. The Hubble cannot be used to image the planet Mercury anywhere in its orbit because sunlight reflecting off the inside of the tube (even with all of the scopes light baffles) would damage Hubble’s imaging equipment. If Hubble cannot be pointed close enough to view Mercury, it has no chance to view Vulcanoids.
