and left behind a series of letters filled with puzzling calculations that defined what the future of Earth could be like once he was gone. And 300 years later, we're still waiting to see the ...

One of the most important consequences of Earth's axial tilt is the seasons. Seasons happen because the tilt points different parts of the planet toward the sun at different times of the year.

The warning, scrawled above a maths calculation on a letter slip in 1704, says Earth will ‘reset’ in ... [and] it is not for us to know the times [and] seasons [which] God hath put into ...

But why do these seasons change every year? The answer lies in Earth's tilt, its orbit around the Sun, and the way sunlight interacts with our planet. The primary reason for the changing on the ...

Up here on the International Space Station I don’t get affected by the seasons but on Earth the seasons are always changing: Spring, Summer, Autumn and Winter. What causes the seasons to change?