Laravel localhost:8000在浏览器中加载后不会活着并掉线

I have posted this question on as a two part question while I was able to figure out the initial question by creating a route, the second part of the question is what I still have not figured out, which is why does localhost:8000 go down after I enter that into the url of the browser.

When I go to the terminal and type "php artisan serve", then the following line appears and that is great:

Tariks-Mac-mini:112214_blog tam3$ php artisan serve
Laravel development server started on http://localhost:8000

However, when I go to the browser and type in localhost:8000, then as soon as I hit the enter/return key, then the following appears in the terminal:

Tariks-Mac-mini:112214_blog tam3$ php artisan serve
Laravel development server started on http://localhost:8000
Tariks-Mac-mini:112214_blog tam3$

It returns to the blinking cursor.

Now, in the browser, initially I find the "You have arrived" page, but if I reload the page, then I receive that find localhost:8000 message.

Why can't the server stay alive?