Periodic changes in Earth's orbit could affect Earth's climate.

地球轨道的周期性变化会影响地球的气候。

youdao

The first private mission outside of Earth's orbit is closer than many of us think.

第一个在地球轨道之外执行的私人任务比我们预想的更早。

youdao

Changes in the eccentricity of Earth's orbit occur in a cycle of about 96,000 years.

地球轨道偏心率的变化大约在96000年的一个周期内发生。

youdao

An estimated half million pieces of debris litter the Earth's orbit as a result of man's exploration of space.

VOA: standard.2010.07.24

Twelve years before the historic Apollo 11 mission, the Soviets successfully launched the first artificial satellite called Sputnik into Earth's orbit.

VOA: standard.2009.07.16

The accomplishment was soon followed by cosmonaut Yuri Gagarin's historic manned spaceflight into Earth's orbit in 1961.

VOA: standard.2009.07.16

Scientists have charted about 500 meteors near the Earth's orbit and estimate that 100 of those are potentially dangerous.

CNN: Tunguska

The results suggest the meteor belongs to a well known family of space rocks - known as the Apollo asteroids - that cross Earth's orbit.

BBC: Russia meteor's origin tracked down

He and his two crew mates explained that NASA originally planned for their mission to stay in earth's orbit, like all previous missions.

NPR: Affinity Fraud Preys On Group's Trust