Sunlovers rejoice, for the summer solstice is upon us, bringing the longest day of 2025 while heralding the beginning of astronomical summer in the northern hemisphere. Thanks to this tilt, we ...

Sunday marks the shortest day of the year in the Northern Hemisphere, signaling the start of astronomical winter ...

At 2:19 p.m. EDT on Monday, Sept. 22, 2025, the sun will cross the celestial equator heading south. That marks the fall equinox in the Northern Hemisphere — the first day of autumn — which means ...

Spring officially begins today (March 20) with the vernal equinox, bringing longer days and warmer temperatures to the Northern Hemisphere. The vernal equinox signals the astronomical start of spring ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the Northern Hemisphere). Check my main feed for more in-depth articles ...

Volcanoes that blast gases high into the atmosphere not only change global temperatures but also influence flooding in unusual ways, Princeton researchers have found. In an August 26 article in the ...

The 2025 summer solstice takes place on June 20, heralding the onset of astronomical summer and the longest day of the year. When you purchase through links on our site, we may earn an affiliate ...