How big is شباهنگ B?

Asia is the Earth's largest continent, holding over four billion people – over half of the world's population. Africa is the second most populous continent, but only has one billion people.

Mars is known as the Red Planet. It is red because it is rusty. Many people believe water and life once existed on Mars. However, even if that is true, the life wouldn't be like the little green men of sci-fi stories.

Ganymede is the largest moon in the Solar System. It orbits Jupiter and was discovered by Galileo, which makes it a Galilean moon. Also, Ganymede is not to be confused with Ganymed, which is an asteroid whose name doesn't have the final "e"!

There was a time when Venus and Earth were thought to be sister planets. That isn't true at all! Venus's surface temperature is always above 450 °C, because its atmosphere, which is mostly carbon dioxide, traps the Sun's heat!

زمین تنها خانه ی ماست. هنگامی که روی آن زندگی می کنیم، ممکن است آنرا بزرگ ببینیم، اما همچنان مهم است که از آن نگهداری کنیم. اگر آن را از دست بدهیم، جائی برای رفتن نداریم.

Currently, Neptune is the farthest planet in the Solar System from the Sun. It takes 164.8 Earth years for it to orbit the Sun. You'll never see Neptune complete a single orbit in your whole life, unless life expectancies increase.