What do stars look like in the nighttime sky? The Bortle Scale: Demonstrating how light pollution adversely affects our view of the night sky. How many stars are visible on a cloudness night in these environments: inner city, urban-suburban transition, suburban, rural, typical dark-sky site, excellent dark-sky site
A stunning size comparison of the planets in our solar system, our sun, and other stars.
An ultra high definition picture of our star, Sol, in 13 different wavelengths.
The relative sizes of the Earth, a neutron star and a quark star.
Is a neutron star a giant atom?
In some ways, sure – it is a solid sphere of nucleons, like a large atom. But in a very important way it isn’t an atom. The nucleus of an atom is held together by the strong nuclear force. In contrast, a neutron star is held together by gravity.