There are eight planets(行星) in our solar system(太阳系). Here is what you need to know about them.Mercury is the smallest planet in our solar system. It is the closest planet to the Sun. It is hot during the day. It is very cold at night.Venus is the second planet from the Su...
Venus is popularly known by scientists and referred to as theEarth’s twin.The two planets are similar in size and have similar structures as well. The Earth isn’t as hot as Venus, but we can observe the clouds and shadows on Venus with our naked eyes. Venus isdifferent from the Earth...
Among the 100 or so extrasolar planets discovered to date, the most bizarre are the dozen or so Jupiter-mass planets that orbit their parent stars with periods between three and seven days. These so-called ``hot Jupiters'' offer the most immediate chances for direct detection and ...
二、 理解A There are eight planets (行星) in our solar system. Here is what you need to know about them.Mercury (水星) is the smallest planet in our solar system. It is the closest planet to the Sun. It is hot during the day. It is freezing cold at night.Venus (金星) is very...
Comparisons with Other Planets The temperature on Mercury's surface fluctuates more widely than that on the surface of any other planet. It can vary by 649 degrees Celsius (1,168 degrees Fahrenheit). By comparison, the extremes on Earth and Mars are separated by 160 degrees Celsius (288 degre...
There are eight planets moving around the sun.We call the family of the sun and its planets the solar system.Mercury is the nearest to the sun,so it is very hot.It is the smallest planet.Venus is very bright and hot.is the nearest to the earth.Mars is covered with orange-red dust ...
There are eight planets moving around the sun. We call the family of the sun and its planets the solar system. Mercury is the nearest to the sun, so it is very hot. It is the smallest planet. Venus is very bright and hot. It is the nearest to the earth. Mars is covered with ...
But all they have sent back have been images of planets inimical to life. Over the last 25 years, however, astronomers have discovered thousands of incredibly diverse planets, in our galaxy alone.但他们发回的都是与对生命有害的行星的图像。然而，在过去的25年里，天文学家仅在我们的星系中就发现...
He wants to know what the other planets look like.He goes to the Pineapple Planet. It is sweet. He likes it. He goes to the Pepper Planet. It is hot. It's not yummy! He doesn't like it. He goes to the Lemon Planet. Wow! It is sour. He goes to many planets. But the ...
and less dense than other areas of the upper atmosphere. These areas appear and disappear sporadically but can be found largely in the north and south poles of the Sun. Scientists can observe coronal holes in ultraviolet and x-ray solar images as they appear darker since they are less hot....