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Here's How to Share Your 'Earth Day' Photos with NASA

This Earth Day, share your photos of Earth with NASA using the hashtag #PictureEarth.
This Earth Day, share your photos of Earth with NASA using the hashtag #PictureEarth. (Image credit: NASA)

NASA has a new social media campaign to gear up its audience for Earth Day, an annual event to celebrate our planet – and the importance of protecting the environment – on Monday (April 22).

Social media users on Instagram, Twitter and the NASA Earth Facebook event page can post a close-up photo of their favorite natural features on our home planet. This could include "ancient trees, blooming flowers, or stunning sunsets," NASA officials said in a statement. Be sure to use the hashtag #PictureEarth and explain where the photo was taken — and to upload your photo on April 22 to qualify.

NASA plans to showcase these photos in videos and composite images that the agency will share on social media after Earth Day.

Related: Amazing Images of Earth from Space (Gallery)

"NASA satellites and airborne instruments picture Earth every day to increase our knowledge of our home and improve lives," the agency said in a statement. "These images, shared with scientists and the public worldwide, may use visible light, like a photographer's camera, or peer into infrared, microwave and radio wavelengths that are invisible to human eyes."

Shortly after Earth Day, NASA will add yet another Earth-observing satellite to its growing fleet. The Orbiting Carbon Observatory 3 will launch to the International Space Station with a SpaceX Dragon cargo spacecraft on April 26, if all goes to schedule. This mission will measure carbon dioxide from space, a key gas implicated in global climate change. (The mission was almost canceled due to a 2017 Trump budget request, although it was later reinstated.)

The first Earth Day took place in 1970, less than 18 months after Apollo 8 astronauts took full-color pictures of the Earth rising above the moon. It was the first time human eyes saw our planet from so far away, and the photo is credited with helping spark the environmental movement. The first "Earthrise" image, however, was taken by NASA's robotic Lunar Orbiter 1 spacecraft in 1966, in black and white.

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Elizabeth Howell
Elizabeth Howell is a contributing writer for who is one of the few Canadian journalists to report regularly on space exploration. She is pursuing a Ph.D. part-time in aerospace sciences (University of North Dakota) after completing an M.Sc. (space studies) at the same institution. She also holds a bachelor of journalism degree from Carleton University. Besides writing, Elizabeth teaches communications at the university and community college level. To see her latest projects, follow Elizabeth on Twitter at @HowellSpace.