What does ultraviolet light from hot stars in very distant galaxies reaches us in the form of?

It's very rare but a star can be created outside a galaxy. I don't have any examples but they exist and it's rare.

I assume that your 1010 means $10^10$. Then the number of stars is simply $10^10*10^10=10^20$.

There are a ton of extremely powerful telescopes both here on Earth and in space that is capable of looking billions of light years far. And we can see a...

Andromeda is being pulled apart by the expanding universe. But the gravity between the Milky Way and Andromeda is strong enough to overcome this expansive force. Gravity is pretty...

Ideal Gas Equation of State: $PV = Nk_BT$ $P$ - gas pressure in Pascals ($Pa$), $V$ - gas volume in cubic meters ($m^3$), $N$ - Number of atoms/molecules, $T$...

Many galaxies are members of groups or clusters. Since groups and clusters contain so many galaxies relatively close together, it should not be surprising that galaxies sometimes collide with each...

Stars tend to exist in a binary setup. That is, two stars orbiting about each other. Our star, , is an exception although there is discussion that maybe a long...

Light travelling through space for any distance remains unchanged. So, ultraviolet light emitted from a distant galaxy will still be ultraviolet light at the same frequency when it arrives...

At this extremely low pressure, the gives an accurate estimate. $PV=nRT$ where, $P$ is the gas pressure in atmospheres, $n$ is the number of moles of gas in the sample,...

For this purpose we render the Ideal Gas Law on an atomic basis instead of the usual molar basis: (Pressure)$\times$(Volume) = (Boltzmann's constant)$\times$(No. of atoms)$\times$(Absolute temprerature) Volume = $1\times10^{-6}" m"^3$...