Looking for a particular star?
Find it here!
Here’s the list of all 88 recognized constellations
How did the universe begin? And what is its ultimate fate? The understanding that we have today was initiated by the work
. And building on his work, we are now certain that the universe is expanding.
In fact, space is getting
bigger at an increasing rate
We begin with the realization that the
are actually distant galaxies. At the beginning of the twentieth century,
astronomers were taking the
of these galaxies that showed a displacement of the expected positions of absorption
The vast majority of the spectra of galaxies were red-shifted
was soon explained by having the galaxies
moving away from us
. Now we see that virtually all galaxies in the universe are
moving apart from each other
. Does that
mean that everything in the universe is getting bigger? The rate of this expansion is repented in a calculated value known as