Here's why:
* Outgassing is often subtle: Outgassing from asteroids is usually a relatively slow and faint process. While it can create a small dust cloud around the asteroid, it's unlikely to cause significant blurring in images taken from a distance.
* Blurriness is usually due to other factors: The most common causes of blurriness in asteroid images include:
* Atmospheric distortion: Earth's atmosphere can distort light, creating a blurry effect.
* Telescope limitations: Telescopes have inherent limitations in resolution, which can contribute to blurriness.
* Motion blur: Asteroids are moving, and long exposure times can cause motion blur.
* Image processing: Even if the raw data is sharp, image processing techniques can sometimes introduce blurriness.
* Some exceptions: There are a few rare cases where outgassing might be visible as a "blur" in images. For example, a large outburst of dust from an asteroid could appear as a hazy cloud around it. However, this is uncommon.
In short: While outgassing is a real phenomenon in some asteroids, it's not the primary reason for blurriness in most asteroid images.
If you're interested in learning more about asteroid outgassing, you can search for research articles on topics like:
* Cometary activity (as comets are a type of asteroid that often outgasses significantly)
* Thermal evolution of asteroids
* Dust production from asteroids
