how are scientists going to see through the dense layers of gas/dust around stars when they are born.

Question: how are scientists going to see through the dense layers of gas/dust around stars when they are born.
- Keywords:
  dust,
  gas,
  layer,
  star
Asked by serious mass to Gavin, Karen, Mark, Michel, Roisin on 10 Nov 2016.
- Mark Kennedy answered on 10 Nov 2016:
  
  Typically, we look at these areas in different wavelengths to see whats going on. Have a look at the following image:
  
  Gas/dust is really good at blocking optical light, which is what you and I see with our eyes. So when we look at star forming regions with our eyes or optical telescopes, we see something like left panel in the above image.
  
  However, infrared light isn’t blocked by dust/gas, so using infrared telescopes allows us to see through to the stellar nursery (see the right panel of the above image).
- Roisin Jones answered on 10 Nov 2016:
  
  Not my area of expertise at all I’m afraid, but I think Mark has this very well covered!
- Karen answered on 10 Nov 2016:
  
  Yes this one’s for Mark!
- Gavin Coleman answered on 10 Nov 2016:
  
  I’ll have to leave this one to Mark XD

Question: how are scientists going to see through the dense layers of gas/dust around stars when they are born.