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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.

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NASA Climate Change website

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How much do you know about glaciers and ice caps?
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Quiz: Ice and glaciers
NASA's new Orbiting Carbon Observatory-2 space satellite will probe the carbon cycle like never before, telling us where the carbon is going and giving us clues as to where we will end up.
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Atmospheric carbon dioxide ...
Graphic: Measuring carbon dioxide from space
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
A detailed look at Jupiter's and Earth's atmospheres and cores as we unlock mysteries of the solar system.
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Jupiter and Earth: Giant di...
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
NASA Earth Right Now promo
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NASA Earth Right Now promo
Video: NASA Earth Right Now promo
Learn how you can explore Earth Now's many features, including real-time data visualizations of Earth's vital signs and 3D models of Earth-orbiting satellite missions.
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'Earth Now' Tutorial
'Earth Now' Tutorial
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'
This visualization shows the complex patterns of methane emissions produced globally from January 2018 to November 2018.
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Video: Methane Sources
Video: Methane Sources
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
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
Graphic: A simplified animation of the greenhouse effect.
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The Greenhouse Effect
Graphic: The Greenhouse Effect
This animation shows the change in atmospheric nitrogen dioxide (NO2) levels as a result of COVID-19 stay-at-home restrictions.
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COVID-19 Mitigation Leads t...
COVID-19 Mitigation Leads to Reduced Pollution Associated with Decreased Fossil Fuel Use
Track Earth's vital signs and fly along with NASA's Earth-observing satellites.
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Eyes on the Earth
Interactive: Eyes on the Earth
Graphic: Global surface temperature changes versus the Sun's energy that the Earth receives in watts (units of energy) per square meter since 1880.
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Temperature vs Solar Activity
Graphic: Temperature vs Solar Activity
Video: how different factors, both natural and industrial, contribute to global warming.
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How global warming stacks up
Video: How global warming stacks up
City vs. desert - Climate365 graphic
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City vs. desert - Climate36...
Graphic: City vs. desert temperatures
This view of Earth from space is a fusion of science and art, drawing on data from multiple satellite missions and the talents of NASA scientists and graphic artists.
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Twin Blue Marbles
Twin Blue Marbles
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
Quiz: Carbon and the climate
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Quiz: Carbon and the climate
Quiz: Carbon and the climate
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
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
Earth discovered - Climate 365 graphic
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Earth discovered - Climate ...
Graphic: Earth, discovered
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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Land. Water. Fire. Ice. The...
Video: Majestic Planet
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 Smoke f...
Global Transport of Australian Bushfire Smoke

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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 Mobile Apps

Climate Mobile Apps

Keep track of Earth's vital signs, see the planet in a state of flux and slow the pace of global warming with NASA's free mobile apps.
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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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