Space weather (noun, “SPAY-s WEH-thur”)
This phrase describes conditions in the atmosphere far above Earth and around the sun. This weather doesn’t produce clouds, rain or snow. But it can still have a big impact on our lives. Space weather can come from the solar wind — vast gusts of electrically charged particles — produced by our sun. The sun can also spurt out sudden bursts called coronal mass ejections. These are great bursts of plasma and magnetic fields. The charged particles from solar winds can interact with the charged particles in our ionosphere — the upper part of our atmosphere. The magnetic fields from coronal mass ejections can also mix with Earth’s own magnetic fields. These interactions can produce “storms” of electricity. That electricity can damage satellites or overload power lines and cause blackouts.
In a sentence
Space weather is what gives the Northern Lights their intensely colorful hues.