Question

Give any three reasons explaining earth as a unique planet

Answer 1

1.earth has life supporting agents
2.there is a perfect balance of gases present in the atmosphere which makes possible the various gaseous cycle
3.earth has abundant of water
4.earth has a gravitational pull which enables us to remain sticked on the ground
5.the temperature is also affordable

Answer 2

 



EARTH

Earth seems to fill the sky in this image taken by the crew of Apollo 17 in 1972. The picture marked the first time astronauts were able to photograph the south polar ice cap.



EARTH FROM THE MOON

This photo was the world's first view of Earth taken near the moon. It was snapped by the U.S. Lunar Orbiter I on August 23, 1966, when the spacecraft was just about to pass behind the moon on its 16th

EARTH'S MOON

The moon's lunar highlands (light areas) and maria, or volcanic plains, (dark areas) are clearly visible in this photograph taken by the Expedition 10 crew onboard .



INDIAN OCEAN

Clouds ripple across the Indian Ocean in this photograph taken from the space shuttle Discovery in 1999. This shuttle mission, STS-96, lasted 9 days, 19 hours, 13 minutes, and 57 seconds and covered 3.8 million miles (6.1 million kilometers).



EARTH DURING A SOLAR ECLIPSE

The moon's shadow darkens part of Earth during a solar eclipse. Only people underneath the center of that dark spot will see the total eclipse; others will see a partial eclipse. This shot was taken from the Mir space station in August 1999.

PHOTOGRAPH COURTESY CENTRE NATIONAL D'ETUDES SPATIALES

Earth, our home planet, is the only planet in its solar systemknown to harbor life. All of the things we need to survive are provided under a thin layer of atmosphere that separates us from the uninhabitable void of space.

Earth is made up of complex, interactive systems that are often unpredictable. Air, water, land, and life—including humans—combine forces to create a constantly changing world.


SOLAR SYSTEM 101 How was our solar system born? Join scientists as they embark on a journey into the mesmerizing mysteries of space. Hear their expert theories, then decide for yourself. 

Viewing Earth from the unique perspective of space provides the opportunity to see Earth as a whole. Various satellites and spacecraft, including the Mars Rover and Cassini, which hails from Saturn, provide perspectives of the planet from the others in the solar system.

EARTH: FAST FACTS

Earth is the third planet from the sun and the fifth largest in the solar system.Earth is 92,955,820 miles (149,597,891 kilometers) away from the sun.At 7,917.5 miles (12,742 km), Earth's diameter is just a few hundred kilometers larger than that of Venus.The four seasons are a result of Earth's axis of rotation being tilted more than 23 degrees.The length of a year on Earth is 365 days, 6 hours, and 16 minutes.The length of a day on Earth is 23 hours and 56 minutes.Oceans at least 2.5 miles (4 kilometers) deep cover nearly 70 percent of Earth's surface.The minimum weather temperature on Earth is -126 degrees Fahrenheit (-87.8 degrees Celsius) and the maximum weather temperature on Earth is 136 degrees Fahrenheit (57.8 degrees Celsius).Fresh water exists in the liquid phase only within a narrow temperature span (32 to 212 degrees Fahrenheit/0 to 100 degrees Celsius). This temperature span is especially narrow when contrasted with the full range of temperatures found within the solar system (from -400 to 900 degrees Farenheit/-300 to 500 degrees Celcius).The presence and distribution of water vapor in the atmosphere is responsible for much of Earth's weather.