The difference between perihelion, when Earth is closest to the Sun, and aphelion, when Earth is farthest from the Sun, is only about 3 percent, or roughly 3 million miles (4.8 million kilometers).

The second factor to consider is that the Earth's orbital speed varies, which is why days are longer and shorter throughout ...

On January 4, 2025, Earth will reach perihelion—its closest point to the Sun for the year—a perfect moment to reconnect with the warmth and light that sustain us, even in the depth of winter.

Jupiter will shine brightly in the night sky on Saturday as it reaches opposition, its closest point to Earth in 13 months.

An 11-inch scope will reveal Pluto and a few similarly faint stars, but a larger instrument will improve your odds a lot.

Earth and environmental sciences cover all aspects of Earth and planetary sciences, and broadly encompasses solid Earth processes, surface and atmospheric dynamics, Earth system history, climate ...

We experienced the earliest sunset until next winter, but daylight is still in short supply. To know why, we need to look to ...

30, 2024 — More accurate orbit predictions for satellites and space debris as well as a better understanding of the water masses present on Earth: Researchers at achieved both using satellite laser ...

Nov. 21, 2024 — Researchers have reported the discovery of a previously unknown compound in chloraminated drinking water. Inorganic chloramines are commonly used to disinfect drinking water to ...

When humans pump groundwater, it has a substantial impact on the tilt of Earth’s rotation. Additionally, a study documents just how much of an influence groundwater pumping has on climate change.

Watch for one of the best meteor showers of the year, Mars at its brightest, a new "planet parade" in late January, plus a ...