A quasar is believed to be a supermassive black hole surrounded by an accretion disk. An accretion disk is a flat, disk-like structure of gas that rapidly spirals around a larger object, like a black hole, a new star, a white dwarf, etc.
Category: Special Enrollment Periods SEP. In certain situations, people with Medicare may be eligible for a Special Enrollment Period (SEP) allowing them to join a Medicare Advantage plan or Medicare Part D prescription drug plan, or switch to a different Medicare plan during the plan year.
This period is from January 1 â February 14 of each year. If you want to disenroll from an MA plan without drug coverage (MA-only plan) or an MA plan with Part D coverage (MA-PD) and return to Medicare during this time, you have a special election period (SEP) to join a Part D prescription drug plan.