The Sahara (Arabic: الصحراء الكبرى‎, aṣ-ṣaḥrāʾ al-kubrā , 'the Greatest Desert') is the largest hot desert in the world. It is the third largest desert after Antarctica and the Arctic. Its surface area of 9,400,000 square kilometres (3,600,000 sq mi)[citation needed]—including the Libyan Desert—is comparable to the respective land areas of China or the United States. The desert comprises much of the land found within North Africa, excluding the fertile coastal region situated against the Mediterranean Sea, the Atlas Mountains of the Maghreb, and the Nile Valley of Egypt and Sudan. The Sahara stretches from the Red Sea in the east and the Mediterranean in the north, to the Atlantic Ocean in the west, where the landscape gradually transitions to a coastal plain. To the south, it is delimited by the Sahel, a belt of semi-arid tropical savanna around the Niger River valley and Sudan Region of Sub-Saharan Africa. The Sahara can be divided into several regions, including the western Sahara, the central Ahaggar Mountains, the Tibesti Mountains, the Aïr Mountains, the Ténéré desert, and the Libyan Desert. Its name is derived from the plural Arabic language word for desert (صحارى ṣaḥārā  [ˈsˤɑħɑːrɑː]).
What is the passage about?
Is it a Gaelic word?
What is it known for being?
How many areas can it be classifieded into?
Does it include any fertile ground?
Is it 10,000,000 sq km?
How large is it?
What is it's ranking among all the world's deserts?
What are the other 2?
Are they considered hot?
What mass is the hot one considered comparable to?
How far east does it reach?
Are there any other notable borders?
The Sahara
The Sahara
unknown
unknown
the largest hot desert in the world
The Sahara (Arabic: الصحراء الكبرى‎, aṣ-ṣaḥrāʾ al-kubrā , 'the Greatest Desert') is the largest hot desert in the world
several regions
The Sahara can be divided into several regions
No
excluding the fertile 
No
Its surface area of 9,400,000 square kilometres
9,400,000 square kilometres
Its surface area of 9,400,000 square kilometres
third largest
It is the third largest desert 
Antarctica and the Arctic
It is the third largest desert after Antarctica and the Arctic
No
is the largest hot desert
the respective land area of China
is comparable to the respective land areas of China or the United States
from the Red Sea
The Sahara stretches from the Red Sea in the east 
Yes
The Sahara stretches from the Red Sea in the east and the Mediterranean