Will the night sky ever be more stars than darkness?
Nope! The universe's expansion is accelerating, which means there's a &quot;horizon&quot; beyond which light can never reach us, no matter how long it travels. Although the light always travels at the speed of light, the &quot;amount of space&quot; between photon and us can increase faster than the speed of light. This isn't a real &quot;speed&quot; - it's not any one object moving faster than the speed of light, it's all of space between us and the photon locally expanding a little bit - but it means the photon will never reach us. The acceleration means that this horizon will eventually shrink, as the expansion speeds up.
This means there's a finite amount of stuff that we can ever reach, and that can ever reach us. So you won't build up more and more distant stars &amp; galaxies in the night sky forever.