It is long known that Earth's orbit around the Sun changes periodically, cyclically affecting the way solar radiation strikes the Earth.
人们早就知道，地球围绕太阳的轨道会周期性地变化，周期性地影响太阳辐射照射地球的方式。
Mars's orbit around the Sun is the fourth fastest orbit of all the solar system planets.
在太阳系所有行星中，火星绕太阳的轨道速度第四快。
The reason for a leap day or a leap year is because our calendar does not follow the Earth's orbit around the sun exactly.
闰日或闰年出现的原因是我们的历法并不精确地遵循地球围绕太阳运行的轨道。
You are probably aware that the earth's orbit around the sun is not shaped like a perfect circle.
你可能知道，地球围绕太阳的轨道形状不像一个完美的圆。
Astronomers have detected an asteroid not far from Earth, moving in the same orbit around the Sun.
天文学家在距离地球不远处发现一颗小行星，它与地球在同一轨道上围绕太阳运行。
Milankovitch proposed in the early twentieth century that the ice ages were caused by variations in the Earth's orbit around the Sun.
米兰科维奇在20世纪早期提出，冰河时代是由地球绕太阳运行轨道的变化引起的。
Earth's orbit around the sun and tilt on its axis combine to carry us in this hemisphere further away from receiving the sun's rays most directly.
随着地球围绕太阳的轨道和轴的倾斜将我们带到这个半球，我们更远离直接接收太阳光线的地方。
It says that variations in earth's movements, specifically in its orbit around the sun, these variations lead to differences in the amount of solar energy that reaches the earth.
这一假设认为，地球运行的变化，特别是绕太阳轨道的变化，会导致太阳到达地球能量的不同。
A lot of people think of earth's orbit around the sun as being perfectly circular, as smooth and as regular as, say, the way that hands move on a well-made watch, but it just doesn't work that way.
很多人认为地球绕太阳的轨道是完美的圆形，就像手在一块制作精良的手表上移动那样平滑、有规则，但事实并非如此。
Pluto's orbit around the sun is unusual.
(冥王星)围绕太阳运转的轨道是非同寻常。
Pluto 's orbit around the sun is unusual.
(冥王星)围绕太阳运转的轨道是非同寻常。
Are we being held in our orbit around the Sun?
我们在轨道上正围绕太阳被举着吗？
Well, it's all down to the Earth's orbit around the sun.
好吧，这全都归结于地球沿着轨道绕太阳公转。
Thee earth moves in an approximately circular orbit around the sun.
地球在一个近似正圆的轨道上绕着太阳运行。
It needs to be in orbit around the Sun - Yes, so maybe Pluto is a planet.
它需要绕太阳公转-是的，所以冥王星也许是一颗行星。
the planets, Earth included, orbit around the sun on this celestial sheet.
括地球在内）都沿着轨道绕着太阳公转。这代表太阳系平面，学名“黄道”。
Now I wonder, what is the kinetic energy of the Earth in orbit around the sun?
我想知道地球绕太阳，公转的动能是多少？
Spitzer viewed the ring edge-on from its Earth-trailing orbit around the sun.
Spitzer卫星在围绕太阳运转的地球轨道上观测到了环的侧面。
About every two years, however, the Earth passes Mars as they orbit around the Sun.
大约每隔两年，地球会在绕太阳运行的轨道上经过火星。
In other words, Juno would zip right past Jupiter and end up in a useless orbit around the sun.
换句话说，朱诺号将迅速掠过木星，进入一个环绕太阳的无用轨道。
The ecliptic plane is defined as the imaginary plane containing the Earth's orbit around the sun.
黄道平面是一个假想的平面，理论上它包含了地球环绕太阳运行的轨道。
A recently-discovered dwarf planet, named Sedna, has an extra-long and usual elliptical orbit around the Sun.
一颗近期被发现的褐矮星“赛德娜”(Sedna)有一个超长的椭圆形的绕太阳的轨道。
Muller and others believe that the dark star probably takes about 26m years to complete an orbit around the sun.
马勒和其他一些人认为，这颗暗星绕太阳运行一周大约要用2600万年的时间。
The comets' offspring, the meteor swarms, travel in regular orbits, similar to the earth's orbit around the sun.
彗星的后裔，即流星团，沿正常的轨道运行，与地球绕太阳运行的轨道相似。
As another example the center of mass of the earth and moon moves in an approximately circular orbit around the sun.
作为另一个例子，地球和月亮的质心就是在一个绕太阳的近似的圆轨道上运行。
It takes Earth 24 hours to complete a rotation on its axis, and roughly 365 days to complete an orbit around the sun.
地球要花费24小时完成绕地轴一周的自转，花费大约365天完成绕太阳一周的公转。
And what a beast it is: as wide as Earth's orbit around the sun and 4.3 million times more massive than our home star.
简直是个巨兽啊！ 宽度相当于地球公转轨道的直径，质量比我们的太阳还大430万倍。
And what a beast it is: as wide as Earth's orbit around the sun and 4.3 million times more massive than our home star.
简直是个巨兽啊！ 宽度相当于地球公转轨道的直径，质量比我们的太阳还大430万倍。
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