[cbmuser]

Yet, solar does not produce electricity reliably, needs additional electric backup power and uses large amounts of material and area for producing relatively small amounts of energy.

Nuclear works everywhere, everytime. There is a reason they put nuclear reactors into submarines and aircraft carriers and space probes.

[jhgb]

> There is a reason they put nuclear reactors into submarines and aircraft carriers and space probes.

The first two have ready access to infinite amounts of coolant, which is absolutely not the situation "everywhere", and the last one actually never delivered more power than solar panels due to very inferior power/weight ratio of all space-based nuclear reactors produced to this date -- the most widespread space-based reactor BES-5 generated something like 7-8 W/kg.

[7952]

I am in favour of nuclear power but it is not so black and white.

You have just listed three types of project with access to vast resources. The number of nuclear powered vessels is vanishingly small. And spacecraft overwhelmingly use solar when they can. If your goal is to move a ship or launch a communication satellite then the last thing you want to do is add the considerable extra complexity of nuclear power. Nuclear engineering is hard.