Related topics: climate change ยท northern hemisphere

Big south swell could produce 10 foot waves at San Diego beaches

A storm that originated off New Zealand and sent historically large waves to Tahiti and Hawaii will produce breakers in the 4 to 7 foot level, with sets up to 10 feet, at some San Diego County beaches through early Thursday, ...

US environmental study launched for Thirty Meter Telescope

The National Science Foundation said Tuesday it plans to conduct a study to evaluate the environmental effects of building one of the world's largest optical telescopes on sites selected in Hawaii and Spain's Canary Islands.

Scientists find oldest Martian meteorite's original home

Scientists announced Tuesday they had found the crater from which the oldest known Martian meteorite was originally blasted towards Earth, a discovery that could provide clues into how our own planet was formed.

Beyond the clouds: Finding galaxies behind galaxies

There are hundreds of billions of galaxies in the universe, each containing billions of stars, and found in every part of the sky. But in some directions, nearby galaxies block the view of the more distant cosmos. Now a team ...

Webb reveals cosmic cliffs, glittering landscape of star birth

This landscape of "mountains" and "valleys" speckled with glittering stars is actually the edge of a nearby, young, star-forming region called NGC 3324 in the Carina Nebula. Captured in infrared light by NASA's new James ...

Web archive with astronomical photographic plates goes online

Lots of little dots with no apparent pattern: Where laypeople may just see milky gray photos sprinkled with what look like random crumbs, it is enough to make astronomers' hearts miss a beat. We are talking about historical ...

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Southern Hemisphere

Coordinates: 45°0′0″S 0°0′0″E / 45°S 0°E / -45; 0

The Southern Hemisphere is the half of a planet that is south of the equator—the word hemisphere (from the greek word σφαιρα (sphere) +ημι(half)) literally means 'half ball'. It is also that half of the celestial sphere south of the celestial equator.

Earth's southern hemisphere contains all or parts of four continents (Antarctica, Australia, parts of South America and parts of Africa), four oceans (South Atlantic, Indian, South Pacific, and Southern) and most of Oceania. Several islands off the Asian continental mainland are also in the Southern Hemisphere. Due to the tilt of Earth's rotation relative to the Sun and the ecliptic plane, summer is December 21 to March 21 and winter is June 21 to September 21. September 22 is the vernal equinox and March 21 is the autumnal equinox.

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