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Our sun observing spacecraft took a spin! On July 6, engineers instructed the Solar Dynamics Observatory to roll 360 degrees on one axis. It dutifully performed the seven-hour maneuver, while producing some dizzying data: For this period of time, SDO images - taken every 12 seconds - appeared to show the sun spinning, as if stuck on a pinwheel.
Credits: NASA's Goddard Space Flight Center/SDO/Joy Ng
#nasa #space #sun #sdo #astronomy #nasabeyond #science
今天，NASA宣布發現了另一個類地球的系外行星
【 Kepler-452b 】
Earth’s bigger, older cousin! With the help of our Kepler Mission, we’ve confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star. This planet is 60% larger than Earth. The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone -- the area around a star where liquid water could pool on the surface of an orbiting planet -- of a G2-type star, like our sun. The confirmation of Kepler-452b brings the total number of confirmed planets to 1,030. Learn more: http://go.nasa.gov/1fp6ILB #NASABeyond
