Los vecinos más cercanos de la Tierra: el planeta rojo

Mars was once thought to be similar to Earth and possibly host life. However, scientific studies have shown it to be a rocky planet with a thin atmosphere, making it colder than Earth. Spacecraft have explored Mars, revealing its surface contains red iron oxide and dormant volcanoes. Evidence suggests liquid water may have once existed, with frozen water found near the poles. Despite these findings, no life forms have been discovered.

What was Mars initially thought to have in common with Earth?

• A similar atmosphere

• Life forms

• Oceans

• Forests

What have spacecraft discovered about the surface of Mars?

• It is mostly water

• It is rocky with dormant volcanoes

• It has a dense forest

• It is covered with ice

What evidence suggests that Mars once had liquid water?

• Presence of large lakes

• Huge canals on the surface

• Frequent rainfall

• Snow-capped mountains

Where have large concentrations of frozen water been found on Mars?

• On the mountain tops

• Near the poles

• In the valleys

• In the equatorial region

Why is Mars colder than Earth?

• It is covered in ice

• It has no sunlight

• It has a thin atmosphere

• It is farther from the Sun