Live Earth View Right Now – NASA studies our planet more than anyone else. We fly 26 missions into orbit and sponsor hundreds of research programs and studies each year. We observe the planet’s oceans, land, ice and atmosphere, and measure how changes in one affect the others. We are developing new ways to observe and study Earth’s interconnected systems and building long-term data records of how our planet is evolving. The agency freely shares this unique knowledge and collaborates with organizations around the world.
Shipping, smog and ozone affect the health of Chicago residents and downwind communities. A NASA-led mission aims to help…
Live Earth View Right Now
Satellite observations show that students of color in the United States attend public schools with higher concentrations of air pollution than their white peers.
Will The Earth Last Forever?
Every year, the earth’s natural sunscreen – the ozone layer – thins for several months at the South Pole. Learn more about why it’s created, why it’s important, and how NASA studies it.
Wind and rain from a powerful storm battered Western Europe in early November, causing severe flooding in central Italy.
Parinacota and Pomerape volcanoes rise like twins on the border between Chile and Bolivia, but a closer inspection reveals differences in appearance.
Super Cyclonic Storm Mocha 2023
Launched in December 2022, the Surface Water and Ocean Topography (SWOT) satellite, led by NASA and France’s Center National d’Études Spatiales (CNES), provides scientists with unprecedented detail about Earth’s surface water. Here are some stories from the first year.
NASA has a unique vantage point from which to observe and understand the beauty and wonder of Earth. Looking back from space, astronaut Edgar Mitchell once called Earth “a sparkling blue and white jewel,” and it dazzles the eyes.
In an interactive exhibit at NASA headquarters in Washington, D.C., visitors are invited to see the Earth as seen by NASA and its research partners from space. Open to visitors from 8:30 to 17:30. ET Monday through Friday.
There Is A ‘gravity Hole’ In The Indian Ocean, And Scientists Now Think They Know Why
For six decades, satellites, sensors and scientists have collected data about Earth’s land, water, air and climate. On this website you can see what this data has taught us about sea level rise, air quality, wildfires, greenhouse gases, ice cover and agriculture.
Earth appears to fill the sky in this image taken by the Apollo 17 crew. in 1972 The image marked the first time that astronauts were able to photograph the South Pole ice cap.
Earth appears to fill the sky in this image taken by the Apollo 17 crew in 1972. The image marked the first time astronauts photographed the South Pole ice cap.
Earth, our birthplace, is a world like no other. The third planet from the Sun, Earth, is the only place in the known universe where life has been confirmed.
Earth: Facts About The Blue Planet
With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and the only one guaranteed to have liquid water on its surface. Earth is also unique when it comes to nicknames. Every other planet in the solar system was named after a Greek or Roman god, but for at least a thousand years, some cultures have described our world using the Germanic word “Jord,” which means “Earth.”
Earth is the only planet that supports life. Learn about the origins of our home planet and some of the key components that help make this blue spot in space a unique global ecosystem.
The Earth orbits the Sun every 365.25 days. Since our calendar years only have 365 days, we add an extra leap day every four years to account for the difference.
Planet Earth Sos A4 Size With Correction
Although we can’t feel it, the Earth zooms through its orbit at an average speed of 18.5 kilometers per second. In this orbit, our planet is on average 93 million kilometers from the Sun, the distance that light takes about eight minutes to travel. Astronomers define this distance as an astronomical unit (AU), which serves as a practical cosmic measure.
The Earth rotates on its axis every 23.9 hours, defining day and night for surface dwellers. This axis of rotation is tilted 23.4 degrees from the plane of the Earth’s orbit around the Sun, giving rise to the seasons. The hemisphere closer to the sun experiences summer, and the hemisphere tilted away experiences winter. In spring and autumn, each hemisphere receives a similar amount of light. Every year on two specific dates – called the equinoxes – the two hemispheres light up equally.
About 4.5 billion years ago, gravity forced the Earth to form a disk of gas and dust surrounding our young Sun. Over time, the interior of the Earth – which is mainly composed of silicate rocks and metals – was divided into four layers.
Animated Map: Visualizing Earth’s Seasons
At the heart of the planet is the inner core, a solid sphere of iron and nickel 759 kilometers across and as hot as 9,800 degrees Fahrenheit. The inner core is surrounded by the outer core, a 1,400 kilometer thick band of iron and nickel fluids. Behind the outer core is the mantle, a 1,800 kilometer thick layer of viscous molten rock on which the Earth’s outermost layer, the crust, rests. On land, the continental crust has an average thickness of 19 kilometers, but the oceanic crust that forms the ocean floor is thinner—about three kilometers thick—and denser.
Like Venus and Mars, Earth has mountains, valleys, and volcanoes. But unlike its rocky siblings, nearly 70% of Earth’s surface is covered by oceans of liquid water that average 2.5 kilometers deep. These bodies of water contain 97 percent of Earth’s volcanoes and the mid-ocean ridge, a massive mountain range more than 40,000 miles long.
The Earth’s crust and upper mantle are divided into massive plates that grind against each other in slow motion. When these plates collide, tear, or slide past each other, they create our very active geology. Earthquakes rumble as these plates hang and slide next to each other. Many volcanoes are formed when oceanic crust is crushed under continental crust and slides beneath it. When continental crust plates collide, mountain ranges like the Himalayas are pushed skyward.
Astronomical Unit: How Far Away Is The Sun?
Earth’s atmosphere is made up of 78 percent nitrogen, 21 percent oxygen, and 1 percent other gases such as carbon dioxide, water vapor, and argon. Like a greenhouse, this blanket of gases absorbs and retains heat. On average, the surface temperature of the Earth is about 57 degrees Fahrenheit; without our atmosphere it would be zero degrees. Over the past two centuries, humans have added enough greenhouse gases to the atmosphere to raise Earth’s average temperature by 1.8 degrees Fahrenheit. This additional heat has changed Earth’s weather patterns in a number of ways.
The atmosphere not only sustains life on Earth, it also protects it: it’s thick enough to burn up many meteorites before impact due to friction, and its gases—like ozone—block DNA-damaging ultraviolet light from reaching the surface. But in everything our atmosphere does, it is surprisingly thin. Ninety percent of Earth’s atmosphere is within 10 kilometers of the planet’s surface.
We also enjoy the protection of Earth’s magnetic field, created by the planet’s rotation and its iron-nickel core. This teardrop-shaped field shields the Earth from high-energy particles sent to us from the Sun and elsewhere in the cosmos. However, due to the structure of the field, some particles are carried to the Earth’s poles and collide with our atmosphere, creating the aurora borealis, a natural fireworks display known to some as the northern lights.
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Earth is the planet we have the best chance of understanding in detail; it helps us see how other rocky planets behave, even those orbiting distant stars. As a result, scientists are increasingly monitoring the Earth from space. NASA alone has dozens of missions aimed at unraveling the mysteries of the planet.
At the same time, telescopes are looking outward to find the other Earth. Thanks to instruments like NASA’s Kepler space telescope, astronomers have discovered more than 3,800 planets orbiting other stars, some of them Earth-sized and a few that closely orbit their stars. so that the temperature is potentially livable. Other missions, such as the Transiting Exoplanet Survey Satellite, are poised to find even more.
SOURCES NASA Science Solar System Exploration – Earth NOAA Ocean Explorer – Mid-Ocean Ridge NOAA Climate – Climate Change NASA – Kepler and K2 Missions IPAC/Caltech – Cool Cosmos NASA Exoplanet Archive
Night Sky, November 2023: What You Can See Tonight [maps]
A Mars-sized object called Theia smashed into Earth, and the debris flowed to the Moon. Now scientists believe they have identified fragments of Theia at the bottom of the Earth’s mantle.
You’d be hard-pressed to find these common Earth rocks on planets around us. Here’s what makes our landscape so special.
These thick balls of rock and ice are remnants of the creation of the universe. Here’s what you need to know about them, and whether they pose a serious risk. This site brings you face to face with the solar system as it is now…and how it was and will be.
Live Real Time Satellite Tracking And Predictions
Leonidas (created by Comet Tempel-Tuttle) can be a prolific shower of between 15 and hundreds of meteors per hour, but average about 40. November 17 and 18. See
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