Speed Of Light
Today in the modern era we know that the speed of light(denoted by c in physics) in a vacuum is about 186282.4 miles per second(670616640 miles per hour!), but for …
STARS
Closest Star To Earth
The closest star to the Earth is the Sun, a yellow dwarf star with a mean distance of 93 million miles from Earth. That being said, what I think most …
What Is A Light Year?
What is a light year? The short answer to that question is that a light year is a measure of distance – the distance that light can travel in a …
Hubble Space Telescope
The Hubble Space Telescope has been one of the most remarkable achievements of modern space exploration. It was launched from the Space Shuttle into lower Earth orbit at an altitude …