Space shuttle Atlantis' forward reaction control system, or FRCS, being lowered by a crane as workers ready to re-install the hardware on the nose of the orbiter. Photo Credit: Mike Killian / ARES Institute and AmericaSpace
Space shuttle Atlantis continues to progress smoothly through transition and retirement processing at Kennedy Space Center. The orbiter, […]
Holiday Lights on the Sun: Imagery of a Solar Flare
The sun emitted a significant solar flare, peaking at 7:28 p.m. EST on Dec. 19, 2014. NASA’s Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event. 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. This flare is classified as an X1.8-class flare. X-class denotes the most intense flares, while the number provides more information about its strength. An X2 is twice as intense as an X1, an X3 is three times as intense, etc.
> Video: Holiday Lights on the Sun
Image Credit: NASA/SDO Read More