@nasa : As Seen on @CBSThisMorning, which is posting some of our images each morning this week - This image from NASA's Solar Dynamics Observatory shows a solar flare -- the bright light on the left side of the sun -- on July 8, 2014. An eruption of solar material can also be seen arcing up and away. After it left the sun, this arc of material became a coronal mass ejection, a giant cloud of solar material, headed toward Mars. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel. Flares move at the speed of light, and can reach Earth in eight minutes. Coronal mass ejections, on the other hand, send actual solar material and particles out into space moving much more slowly: typically around 500-1000 miles per second. Image Credit: NASA #nasa #sun #sdo #solarflare #science
โพสต์เมื่อ 22 ก.ค. 2557 | 22:22 น.
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