字幕列表 影片播放 列印英文字幕 welcome to the Voice of America's news words. In August, NASA launched the Parker Solar Probe in a historic mission to explore the Sun Corona. A scientist for the project said it will go where no spacecraft has dared to go before. Within the Corona of the Sun. The mission will take about seven years to complete. The spacecraft will circle the sun 24 times and study new areas of the star. A. Corona is a bright hot area that extends from the surface of the sun and other stars. A Corona also describes a ground for crown like structure.