One of the reasons NEOWISE is so valuable is that it sees the sky in the thermal infrared. NEOWISE有这样高价值的原因之一便是它使用红外感应观测天空。 That means that instead of seeing the sunlight that asteroids reflect, NEOWI
September 18, 2007 THE PRESIDENT: Thanks for coming. Laura and I are honored to welcome you here to the South Lawn. Welcome to the people's house. (Applause.) First, I'd like to thank Katy Benko for s
Remarks by the president at the lighting of the nationality christmas tree 2013年 美国总统奥巴马在“国家圣诞树”亮灯仪式上的讲话 Merry Christmas, everybody! Well, this show is always a great way to get in the hol
