Planetary nebulae are not related to planets, other than that their shape may sometimes look like a planet. A reflection nebula reflects the light that is cast upon its' dust, from nearby stars. They are often blue in colour. A good example of a reflection nebula is the nebula that formed the Pleiades cluster.
Here is some information from Consumers Union about this personal choice. What the Security Freeze Prevents A security freeze is an effective tool in preventing the most costly and difficult-to-detect form of identity theft â false new accounts opened in your name.
After receiving your freeze request, each credit reporting company will send you a confirmation letter containing a unique PIN (personal identification number) or password. Keep the PIN or password in a safe place. You will need it if you choose to lift the freeze.