Sunspots are temporary phenomena caused by intense magnetic activity on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. - Latest NASA SOHO images! - Latest NASA SDO images! - Every day new pictures! - Extreme ultraviolet Images! - Set sun as your wallpaper! 太阳黑子是造成对太阳的光球强磁场活动暂时现象出现比周边地区明显的黑斑。 - 最新NASA SOHO图像！ - 最新NASA SDO的图像！ - 每天都有新的图片！ - 极紫外图像！ - 设置太阳，因为你的壁纸！[详情]
