SpaceX made history on April 1 with its private Fram2 mission. For the first time ever, a crew orbited the Earth’s poles. Until that point, no humans had ever flown above the poles in a spacecraft.

Changes in Earth's orbit have helped pace climatic change for millennia. Scientists are now trying to understand whether - and how - these changes remodeled the landscapes our ancient ancestors ...

Earth takes a year to orbit the Sun and it is the tilt which ... and note this on a diagram. Students could then focus on one point of the rotation and draw a picture of what life is like in ...

Earth takes a year to orbit the Sun and it is the tilt which ... and note this on a diagram. Students could then focus on one point of the rotation and draw a picture of what life is like in ...