365 days of satellite images show Earth's seasons changing from space
us in the northern hemisphere, the recent chirping of birds and blooming of flowers are welcome signs that spring has arrived
and a new video released by the National Oceanic and Atmospheric Administration (NOAA) shows
The high-speed video strings together snapshots of our planet's surface taken daily for the past year
These images were taken with the NOAA's GOES-East
satellite
,
which orbits more than 22,000 miles (35,000 kilometers) above Earth's equator.
it constantly observes the same regions, including most of the Americas, the Caribbean and the Atlantic Ocean.
From its vantage point in space, the satellite tracks the edge that separates night and day on Earth
In the new video, you can see how this twilight zone, called the terminator, shifts continually throughout the year
That's because our planet is tilted 23.5 degrees on its axis, which impacts the lengths of days and nights.
the northern hemisphere — the earliest spring has arrived in the U.S. in 128 years.
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