First, all aeroplanes do leave a carbon foot print. Second, a nuclear bomb would do horrific damage to the ozone layer ( that's why nuclear testing is banned). Lastly, since no one proved that alien exist their spaceships are not real, but if they are I would imagine that they would do damage to the ozone layer.
It should be pointed out that a carbon foot print has nothing at all to do with the thinning caused by a lack of sunlight to a layer of our atmosphere. CO2 may be a greenhouse gas, but has nothing to do with the ozone layer.
Nuclear bombs could do damage to this layer, but that is not why they are banned. They do damage in many other ways.
Rockets to space dump water vapor, and some of them dump chlorine containing molecules. These all tend to decrease ozone levels
Aircraft dump water vapor, and decrease oxygen levels. These all tend to decrease ozone levels. This is a much stronger effect than for rockets, since many more tons of fuel are involved annually.
Nuclear bombs loft large quantites of contaminants to the upper atmosphere, but very few of them are not fully oxidized. Some water vapor is lofted ahead of the mushroom cloud, and this will do some damage. Thankfully these do not occur often.
CFCs are extremely stable, and the only place they can go away, is where sunlight is strong enough to break them down. Unfortunately, this is where the sunlight is strong enough to make ozone... the ozone layer. So where we have dumped CFCs to the atmosphere since the early 1900s, it will take a while for them to leave the system. And Nature is continually adding Her bit to this loading as well... plants do also make / release chloromethane, especially when burned.
Stars like our sun and hydrogen bombs produce energy through nuclear fusion.
1 million exploding nuclear bombs
Anywhere from 1 to trillions, depending on:yieldburst height/depthburst slant rangeetc.
Project Orion was a study of a spacecraft intended to be directly propelled by a series of explosions of atomic bombs behind the craft (Nuclear pulse propulsion)
Nuclear fusion. Stars like the sun are basically hydrogen bombs at their core. Hydrogen bombs are fusion bombs, building heavier elements up from hydrogen in their high pressure and temperature cores. All the chemical elements in your body apart from hydrogen were built up in stars that exploded long, long ago,
Several orders of magnitude more damage than conventional bombs, and that is only considering the blast and fire damage.
Some bombs are nuclear. But most bombs are not nuclear.
liquid oxygen and liquid nitrogen they eplode and cause a mini explosion that boosts the ship upward but project orion was designed so it shot nuclear bombs from under it
A very complex question, depending on its yield and dozens of other variables.
If you are referring to Pearl Harbour, the answer is bombs. Bombs dropped by aeroplanes if you want to be more specific.
Yes, there is nuclear energy in nuclear bombs. It is released in a few microseconds when they are detonated.
Beacause millions of lives were taken by the nuclear bombs
No, China has several hundred nuclear bombs and has had bombs since 1964.
At this time the US builds no nuclear bombs. A small number of existing bombs are refurbished as needed.
Because they are very inexpensive to develop and can produce comparable damage.
For bombs such as atomic or nuclear, I believe it is a nuclear engineer.
Bombs from aeroplanes. Tanks. Poison Gas.