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Astronomy

Why is Mars cold?

The surface temperatures of Mars are about -87C to 5C, which is much colder than that of Earth's. If Mars has 95% carbon dioxide, which is a Greenhouse gas, why is the surface of Mars so cold? Sho…
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Earth photos

Andes mountain range. Land relief

During the Tertiary era or Cenozoic period some of the most spectacular mountains on our planet were formed. These are relatively young formations, such as the Himalayas or the Andes. This last mountain range is one of the highest on Earth, due to the short geological time period in which erosion has acted on it.
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