Physics

Spears

2 September, 22:44

Which sequence correctly shows how stars form?

a

nebula forms → nebula collapses → protostar forms → fusion begins

b

protostar forms → nebula forms → fusion begins → nebula collapses

c

fusion begins → nebula forms → protostar forms → nebula collapses

d

nebula forms → protostar forms → nebula collapses → fusion begins