Please capitalize where necessary: if super-novae are giant analogues of ordinary novae we may expect that ionized gas shells are expelled from them at great speeds.
A: If super-novae are giant analogues of ordinary novae we may expect that ionized gas shells are expelled from them at great speeds.

Please capitalize where necessary: the fox is not easily spotted but early in the morning mother fox might be on the way home to the impatient cubs.
A: The fox is not easily spotted but early in the morning mother fox might be on the way home to the impatient cubs.

Please capitalize where necessary: a week later it changed to its later version.
A: A week later it changed to its later version.

Please capitalize where necessary: minimum payment: the producer has received a predetermined minimum payment that is above the cost of production.
A:
Minimum Payment: The producer has received a predetermined minimum payment that is above the cost of production.