Together, the tangential and radial velocities add up to gives us our overall orbital velocity, which changes with distance from the Sun. In fact, at perihelion today we’ll be moving around the ...

In the Chinese science fiction film The Wandering Earth, recently released on Netflix, humanity attempts to change the Earth’s orbit using enormous thrusters in order to escape the expanding sun ...

In the Chinese science fiction film The Wandering Earth, recently released on Netflix, humanity attempts to change the Earth's orbit using enormous thrusters in order to escape the expanding sun ...

(OK, Earth's orbit is not a perfect circle, ... Now let's imagine the moon only interacts with Earth. Recalculating, I get an acceleration of the moon of 2.7 millimeters per second squared.

Gama Alpha reached its orbit less than two months after LightSail 2, a pioneering solar sail mission, burnt up in Earth’s atmosphere to end its three-and-a-half year mission.

Even if we can prevent a global warming apocalypse, our planet won’t be safe forever – the sun will one day expand. So should we try to move the Earth to a wider orbit?