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

When the North Pole tilts toward the sun, it's summer in the Northern Hemisphere ... as the sun's annual journey through the constellations of the zodiac carries it across the celestial equator ...

The global sea ice extent includes measurements taken in both the Southern Hemisphere and the Northern Hemisphere ... of sea ice between winter and summer to the heartbeat of the planet.

At the start of March, Mercury and Venus lay in the west after sunset. Now both have passed between us and the Sun into the ...

as seen from the Northern Hemisphere, is full of stars and constellations only ever seen at this time of the year. The easiest way for stargazers to observe this seasonal transition on the equinox ...

Once you're able to identify a few constellations though ... shift with the seasons, and a map for the Southern Hemisphere won’t help much if you’re in the Northern Hemisphere.

“This region is easily visible in the winter sky in the Northern Hemisphere and summer in the Southern Hemisphere. Look for the Orion constellation and the Orion Nebula (Messier 42) – our solar system ...

Observers can spot the Orion constellation in northern winter or southern summer. “This region is easily visible in the winter sky in the Northern Hemisphere,” said Alves ... while star surveys map ...

Aurora Borealis (Northern Lights) is a feature unique to the Northern Hemisphere and virtually always ... It is worth having a map of the universe to pick out the famous constellations and see any ...