While the variation of Earth’s distance from the Sun isn’t very large, our planet receives more solar energy when it is closest to the Sun during Southern Hemisphere's summer. However, because there are relatively few landmasses south of the equator and oceans take more time to heat up, the temperature difference between the northern and southern summers is very small.
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Spiral galaxy millions of light years away
Gas and dust that will one day form stars.
looking further and further back in time.
Galaxies about to collide.
The galaxy, named Kiso 5639, is located 82 million light-years away from Earth. A photo released by NASA shows just how busy the "tadpole" galaxy is as a firestorm of newborn stars blaze out of one end of the galaxy, lighting up the cosmos.
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have you ever spent a night in a cemetery?
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