Here’s what to know about the Earth’s orbit. As the Earth travels around the sun ... What’s the difference between ...

5. The summer solstice can vary from year to year. The Earth’s four seasons are determined by the planet’s tilt relative to the sun. Based on its position in its orbit around the sun, the Earth’s ...

June 20th marks the summer solstice, the longest day of the year in the Northern Hemisphere. This astronomical event occurs ...

The summer solstice is a moment in space and time during the annual orbit when our tilted planet's Northern Hemisphere points ...

Peak sunshine has arrived in the Northern Hemisphere — the summer solstice. Friday is the longest day of the year north of ...