جستجو در سایت
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ثبت نام در دوره های آموزشی
Galaxy-Site-Logo-New آکادمی علوم انگلیسی گلکسی
National Geographic Magazine: Power of Light

آموزش علوم و ریاضی به زبان انگلیسی

برای اولین بار در ایران ، علوم و ریاضی را به زبان انگلیسی به صورت آنلاین تجربه کنید.

ما سرفصل های آموزشی دروس علوم و ریاضی مدارس معتبر کانادا و آمریکا را برای رده سنی 4 تا 17 سال به صورت آنلاین و ترمیک برای شما تقدیم می کنیم.

ما برای شما ، مسیری مطمئن را جهت ورود به مدارس معتبر و دانشگاه های بزرگ جهان آماده ساخته ایم.

scary-space

Get Ready for Galactic Goosebumps!

In a scary Halloween movie, monsters, ghouls, and haunted houses can give you the creeps! Those things are, of course, just stories that were made up to give you a fright. If you want a real scare, check out these nine unearthly nightmares that could be happening right now in our own galaxy. Eek!

Miranda the Monster Moon

Miranda is an icy moon of Uranus, the seventh planet from our Sun. If you look closely at Miranda, you’ll notice a mismatched appearance. Are those scars a sign that this moon was patched together like Frankenstein’s monster? Nope! Those patches are actually deep craters, high ridges, and extreme cliffs.

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A Frightening Face on the Sun

When NASA’s Solar Dynamics Observatory captured this picture of our Sun in October 2014, it looked like the Sun was getting ready for Halloween! You can light up the face of a jack-o-lantern at home with a candle or flashlight. What’s lighting up this Sun pumpkin’s face? Active regions of the Sun that emit large amounts of light and energy. And on that day in October, those regions happened to look like a ghoulish grin!

 

Death by Spaghettification?

A black hole is an object with gravity so strong that nothing—not even light—can escape. Because of this, we can’t really see black holes, but we can see how they pull on the stars and objects around them. It may sound wild, but there’s actually one at the center of our own galaxy, the Milky Way.

Movies sometimes show a black hole as a gateway to another world. Could that happen in real life? Probably not. Instead, scientists think that if you really got too close to a black hole, the pull of gravity would be so strong that you’d be stretched into a long, thin noodle of material.

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Unending Darkness on the Moon

Sound is absent in the vacuum of space. That means to the human ear, space is a very quiet place. But we can detect energy in space with other kinds of waves. Sometimes, to better understand cosmic events, NASA scientists turn those other energy waves into sound that we can hear. For example, about 11 seconds into this sound clip below, you’ll hear the change when NASA’s Juno spacecraft crossed into Jupiter’s immense and extreme magnetic field.

 

Spine-tingling Space Sounds

Sound is absent in the vacuum of space. That means to the human ear, space is a very quiet place. But we can detect energy in space with other kinds of waves. Sometimes, to better understand cosmic events, NASA scientists turn those other energy waves into sound that we can hear. For example, about 11 seconds into this sound clip below, you’ll hear the change when NASA’s Juno spacecraft crossed into Jupiter’s immense and extreme magnetic field.

 

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spiders-on-mars

The “Spiders” on Mars

In the spring on Mars, spiders emerge from the ground. OK, they’re not actually spiders, but from high above, they sure look like creepy crawlies. When frozen carbon dioxide below the planet’s surface warms enough, it transforms from solid to gas. The trapped gas builds in pressure until it breaks through the Martian surface as a jet. As the jet shoots through the surface, it scatters dark dust around the vent. That’s what creates these spider-like features on the surface.

 

Deadly Winds, Rains of Molten Glass

Exoplanets are planets outside our solar system. And there are some pretty wild worlds out there! For example, from a distance, the planet depicted in this drawing, called HD 189733 b, has a blue color makes it look a bit like Earth. But the weather on this world is nothing like Earth at all. Can you handle winds that travel seven times the speed of sound? Or blowing raindrops made of molten glass? Probably more comfortable to stick around on our own blue planet!

 

Exoplanets
skull-in-our-solar-system

A Skull in Our Solar System

A creepy, skull shaped asteroid called 2015 TB145 tumbled past Earth around Halloween in 2015. Scientists later figured out that it was likely a comet that burned out. The skull-shaped asteroid measured about 2,000 feet, or 600 meters wide. Imagine if that was the skull of a pretend giant human. At that size, the person would have to have been three miles (4.5 kilometers) tall!

 

Rest in Peace, Robots

Satellites that orbit Earth can keep working for a very long time. But where do they go when they reach the end of their lives? Well, if satellites are small enough and close enough, they dive into Earth’s atmosphere and burn up. If the spacecraft is too far away to head back toward Earth, the satellite is instead sent into a far out “graveyard orbit,” many thousands of miles away from Earth. Out there, the dead satellite won’t burn up, but it will at least stay out of the way of active, working satellites.

 

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