Space
The brightest city in the world as seen from space is probably Tokyo, Japan. The city is densely populated with bright lights from buildings, signs, and infrastructure, making it stand out when viewed from above.
Las Vegas, Nevada is often considered one of the brightest cities seen from outer space due to its high concentration of lights and neon signs on the famous Las Vegas Strip.
The International Space Station (ISS) is considered to be the brightest man-made object in space that can be seen from Earth. It reflects sunlight and is easily visible to the naked eye when passing overhead.
The brightest star as seen from Earth is the sun. The brightest star in the night sky is Sirius.
It is a descriptive adjective. Such as in this sentence: That star is the brightest star I have ever seen.
the blue giant is the brightest star
1908 in the Tunguska region of Russia
The least brightest star has not yet been seen and so not identified.
Mars.
the moon.
Generally the brightest objects seen in the sky are the moon, some planets, (notably Venus and Jupiter) and stars, Sirius being the brightest.
Sirius is the brightest star and can be seen from the UK. Link: http://en.wikipedia.org/wiki/Sirius ----