As Mars’ atmosphere continues to change, NASA activated a new instrument on Feb.25 to study how the Sun influences the planet and what drives space weather near Earth. NASA launched ESCAPADE, which ...

Mars is not what it used to be. Once warm, watery, and blanketed by a thick atmosphere, today the Red Planet is cold, dry, and draped by a thin atmospheric veil. The main culprit is a relentless ...

On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a ...

Winter often feels like a long stretch of weak light and cold air. The idea that Earth is actually closest to the Sun during this time can sound wrong, almost misleading. January mornings do not feel ...