New measurements from a NASA satellite show a dramatic cooling in the upper atmosphere that correlates with the declining phase of the current solar cycle.
NASA's Aeronomy of Ice in the Mesosphere (AIM) satellite has captured five complete polar seasons of noctilucent (NLC) or 'night-shining' clouds with an unprecedented horizontal resolution of 3 miles by 3 miles.
Sometimes you really can believe your eyes. That's what NASA's STEREO is telling researchers about a controversial phenomenon on the sun known as the "solar tsunami."
The IBEX mission science team has constructed the first-ever all-sky map of interactions occurring at our solar system's edge, where the sun's influence wanes.
Planning a trip to Mars? Take plenty of shielding. According to sensors on NASA's ACE (Advanced Composition Explorer) spacecraft, galactic cosmic rays have just hit a Space Age high.
New observations made with instruments aboard Japan's Hinode satellite reveal the answer to why the Sun's corona is so darned hot.
Now that the sun has calmed down, a bit, scientists have a rare opportunity to see more clearly into its mysterious interior.
Ulysses, a joint NASA and European Space Agency mission, officially ceased operations today, after receiving commands from ground controllers to do so.
NASA plans to launch the Solar Dynamics Observatory (SDO) later this year to understand how jet streams trigger sunspot production.
After decades of research, NASA scientists say they may have found the answer to why the solar wind is hotter than it should be: turbulence.