Mars has northern and southern hemispheres like Earth, but their defining characteristics ... "We believe that the contrast between the two planets stems from differences in their internal ...

Scientists have known for a while that Mars currently lacks a magnetic field, and many blame that for its paltry atmosphere – ...

At two specific moments each year—called the equinoxes—both hemispheres receive equal illumination. But for several reasons, seasons on Mars are different from those on Earth. For one ...

On two specific dates each year—called the equinoxes—both hemispheres get illuminated equally. About 4.5 billion years ago, gravity coaxed Earth to form from the gaseous, dusty disk that ...

During the equinox, the Earth’s axis and its orbit line up so that both hemispheres get an equal amount of sunlight. The word equinox comes from two Latin words meaning equal and night.

which is the Southern Hemisphere. But I also need to find out how far around the Earth he is, and how far down. To do that, I’ll use what’s called latitude and longitude.Lines of latitude run ...