When you gaze up at the moon at night, it looks almost close enough to touch. But if you actually want to go there, you’re going to need Rocket
What Is a Rocket?
Modern spaceflight began when the Chinese invented rockets about 800 years ago. Early rockets were like big fireworks—tubes filled with gunpowder, shot into the air over battles to frighten the enemy.
A rocket works by burning enormous amounts of fuel very quickly. As the fuel burns, hot gas shoots out one end, pushing the rocket tube in the opposite direction.
Eventually, some engineers began to wonder: if a rocket could travel a mile or more across the ground, could you shoot one straight up and get to space?
So You Want to Leave Earth
To escape the pull of Earth’s gravity and get into space, a rocket has to reach a speed of 25,000 miles (40,000 km) per hour—while pushing through a thick layer of air. That takes a lot of energy!
Talk Like a Rocket Scientist
Speed: How fast you are going.
Velocity: How fast you are going in one direction (speed +direction).
In the 1920s, American rocket scientist Robert Goddard began experimenting with liquid rocket fuels instead of gunpowder. Liquid fuels give more bang per pound, so rockets could be lighter and go faster. Goddard also figured out how to steer rockets. And he suggested that multi-part rockets might be the way to reach space.
You can see rocket science in action by letting go of an untied balloon. Air rushes out the opening, pushing the balloon (a small, rubber rocket) in the opposite direction.
Goddard tested his rockets by launching them from fields near his house. When the neighbors complained, he moved to the New Mexico desert and kept building bigger and better rockets.
Space Race
هذه القصة مأخوذة من طبعة November/December 2017 من Ask Magazine for Kids.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك ? تسجيل الدخول
هذه القصة مأخوذة من طبعة November/December 2017 من Ask Magazine for Kids.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
When a Whale Falls
When an enormous whale dies, its body sinks to the bottom of the ocean. There it provides food for thousands of deep-sea creatures.
The Deepest Dive
In 1872, two scientists set out to study the ocean.
Marie Maps The Sea
Young Marie Tharp thought her dad had the best job ever. He traveled around the country, making maps. His maps were special—they revealed hidden things. They showed where different kinds of soil were, and wet and dry places. That helped farmers know what to plant.
Internet Ocean
Say you’re curious about giraffes.
Bigger Than The Rules
How one tall kid changed the way we play basketball.
Eat This Spoon
Imagine you’re at a picnic, enjoying some spicy noodles and fruit salad. For dessert, you have a slice of cake. Then you top off your meal by eating your fork.
In the Hot Shop
The hot shop at Chicago’s Ignite Glass Studio sizzles with activity.
The Glass Ocean
Peering out from its case in the museum, the little brown octopus looks ready to uncurl its tentacles and glide away. But this octopus isn’t going anywhere. It’s made of glass.
Living Glass
What would you do if your skeleton were made of glass? Maybe you’d be a sponge.
The Greedy Glass
How many pennies can you add to a completely full glass of water?
