Earth's history is a roller-coaster of climate fluctuations, of relative warmth giving way to frozen periods of glaciation before rising up again to the more temperate climes we experience today.

The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in ...

the precession of its rotational axis and the shape of Earth's orbit around the sun. Obliquity refers to Earth's tilt. Imagine drawing a straight line through Earth, along its rotational axis ...

Saturn's rings tilt out of view every fourteen to seventeen Earth years. In 2032, they will be at their best again during ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

Planetary alignments have always been a fascinating subject, both for scientists and astrology enthusiasts alike. The idea ...

It's easy to ... On average, Earth spins its axis one time every 24 hours as it makes its journey around the sun, but the spinning rate used to be much faster. The rate of orbit has slowed down ...

Earth's axis is currently tilted at a 23.5-degree angle away from vertical as it rotates around the sun, affecting how much solar energy hits each of the poles, in particular. But the tilt of ...

A team from the University of Bern and the National Center of Competence in Research (NCCR) PlanetS has developed a ...

The events have been marked and celebrated around ... sun’s warmth and light fall unequally on the northern and southern halves of the planet. During the equinox, the Earth’s axis and its ...

Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it since ancient times. A flock of swans fly at sunrise on the first day of ...