70K views · 1.3K reactions | The United States Postal Service is celebrating 250 years of delivering with a pane of 20 stamps by cartoonist Chris Ware. Spot an array of familiar postal items and icons while following a mail carrier on her rounds through four seasons of the year. Learn more at b.link/v8hu5a21. | US Postal Service | Facebook

434K views · 1.3K reactions | When our Perseverance rover lands on Mars next year, it will be carrying a passenger: the Ingenuity Mars Helicopter, which will attempt the first powered flight on another world. See how the rover will deploy the experimental craft onto the surface: go.nasa.gov/2VeQHjk For more about the Mars helicopter, visit mars.nasa.gov/technology/helicopter/ Credit: NASA/JPL-Caltech and Lockheed Martin Space | NASA Mars | Facebook

Check out our advanced sorting systems in action. They process more than 155 billion pieces of mail every year! | US Postal Service