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Quiz: Our world, other worlds

Test your knowledge of how Earth is different from other planets, both within our solar system and beyond.

Test your knowledge of how Earth is different from other planets, both within our solar system and beyond.

You can browse a gallery containing this quiz and others here.

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NASA Climate Change website

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Video: how different factors, both natural and industrial, contribute to global warming.
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Graphic: City vs. desert temperatures
Las nubes son complicadas cuando se trata de la ciencia del clima, ya que calientan y enfrían la Tierra.
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Las nubes
Las nubes
Video: The NASA satellite fleet in 2017, from low Earth orbit to the DSCOVR satellite taking in the million-mile view.
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Video: NASA's vantage point...
Video: NASA's vantage point to view Earth
These cloud formations were seen over the western Aleutian Islands. Their color variations are probably due to differences in temperature and in the size of water droplets that make up the clouds. This image was acquired by the Landsat 7 satellite on June 16, 2000.
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Aleutian clouds
Aleutian clouds
Temperature agreement - Climate 365 graphic
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Graphic: Earth's temperature record
Video: Southern Hemisphere ozone between July 1 and December 31 for selected years between 1979 and 2018.
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Video: Ozone Watch 2018
Video: Ozone Watch 2018
Land. Water. Fire. Ice. These elements are basic ingredients that make up planet Earth. Take a moment to admire the magnificent spectacle of our stunning home planet from the perspective of space.
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Video: Majestic Planet
Test your knowledge of energy and its role in our climate.
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Quiz: Energy
A detailed look at Jupiter's and Earth's atmospheres and cores as we unlock mysteries of the solar system.
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Infographic: Jupiter and Earth: Giant discoveries ahead
This image shows a spinning formation of ice, clouds and low-lying fog off the eastern coast of Greenland. This image was acquired by the Landsat 7 satellite on May 14, 2001. This is a false-color composite image made using infrared, red and green wavelengths.
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Whirlpool
Whirlpool
Video: Using observations from NASA's Orbiting Carbon Observatory (OCO-2) satellite, scientists developed a model of the behavior of carbon in the atmosphere from September 1, 2014 to August 31, 2015.
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Following carbon dioxide th...
Video: Following atmospheric carbon dioxide
The relentless rise of carbon dioxide levels in the atmosphere.
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The inexorable rise of carb...
Graphic: The relentless rise of carbon dioxide
Earth discovered - Climate 365 graphic
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Graphic: Earth, discovered
Head into the field with first responders, fire scientists and forest managers to see what challenges they face and how NASA can help mitigate the effects of longer and more intense fire seasons.
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Operation Earth: Wildfires
Video: 'Operation Earth: Wildfires'
Test your knowledge of sea level rise and its effect on global populations.
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Quiz: Sea level rise
NASA Earth Right Now promo
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NASA Earth Right Now promo
Video: NASA Earth Right Now promo
NASA scientists are working to understand if our land and ocean can continue to absorb carbon dioxide at the current rate – and for how long.
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Infographic: Earth's carbon...
Infographic: Earth's carbon cycle is off balance
Quiz: Our home planet
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Quiz: Our home planet
Quiz: Our home planet
How much do you know about glaciers and ice caps?
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Quiz: Ice and glaciers
Climate time machine interactive
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Climate time machine intera...
Interactive: Climate time machine
This visualization shows carbon emissions from fires from January 1, 2003 through December 31, 2018. The color bar reflects the quantity of carbon emitted.
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Carbon Emissions from Fires...
Carbon Emissions from Fires: 2003-2018
Perhaps the most impressive of cloud formations, cumulonimbus (from the Latin for “pile” and “rain cloud”) clouds form due to vigorous convection (rising and overturning) of warm, moist and unstable air. Surface air is warmed by the sun-heated ground surface and rises; if sufficient atmospheric moisture is present, water droplets will condense as the air mass encounters cooler air at higher altitudes. The air mass itself also expands and cools as it rises due to decreasing atmospheric pressure, a process known as adiabatic cooling. This type of convection is common in tropical latitudes year-round and during the summer season at higher latitudes. As water in the rising air mass condenses and changes from a gas to a liquid state, it releases energy to its surroundings, further heating the surrounding air and leading to more convection and rising of the cloud mass to higher altitudes. This leads to the characteristic vertical “towers” associated with cumulonimbus clouds, an excellent example of which is visible in this astronaut photograph. If enough moisture is present to condense and heat the cloud mass through several convective cycles, a tower can rise to altitudes of approximately 10 kilometers at high latitudes and to 20 kilometers in the tropics before encountering a region of the atmosphere known as the tropopause—the boundary between the troposphere and the stratosphere. The tropopause is characterized by a strong temperature inversion. Beyond the tropopause, the air no longer gets colder as altitude increases. The tropopause halts further upward motion of the cloud mass. The cloud tops flatten and spread into an anvil shape, as illustrated by this astronaut photograph. The photo was taken from a viewpoint that was at an angle from the vertical, rather than looking straight down towards the Earth’s surface. The image, taken while the International Space Station was located over western Africa near the Senegal-Mali border, shows a fully formed anvil cloud with numerous smaller cumulonimbus towers rising near it. The high energy levels of these storm systems typically make them hazardous due to associated heavy precipitation, lightning, high wind speeds and possible tornadoes.
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Cumulonimbus cloud over Africa
Cumulonimbus cloud over Africa
An animation shows several high impact events across the globe between August 2019 and January 2020, including the Australian bushfires.
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Global Transport of Australian Bushfire Smoke
Quiz: The air we breathe
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Quiz: The air we breathe
Quiz: The air we breathe

Explore

Interactives, galleries and apps

Images of Change

Images of Change

Explore a stunning gallery of before-and-after images of Earth from land and space that reveal our home planet in a state of flux.
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Climate Time Machine

Climate Time Machine

Travel through Earth's recent climate history and see how increasing carbon dioxide, global temperature and sea ice have changed over time.
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Eyes on the Earth

Eyes on the Earth

Track Earth's vital signs from space and fly along with NASA's Earth-observing satellites in an interactive 3D visualization.
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Global Ice Viewer

Global Ice Viewer

Earth's ice cover is shrinking. See how climate change has affected glaciers, sea ice, and continental ice sheets.
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