Indicate whether the following statements regarding black holes are true or false.
1.Some black holes at the centers of galaxies have a mass that is a billion times that of our Sun.
2.Most black holes are about the same radius as the Sun.
3.If the Sun suddenly became a black hole,the Earth would be immediately sucked into it.
4.If you looked directly at a black hole,it would appear perfectly black.
5.The distance from the black hole where gravity is so strong that even light cannot escape is called the event horizon or the Schwarzschild radius.
google 翻譯如下：
1.一些黑洞在星系的中心有一個(gè)質(zhì)量那是我們的太陽的10億倍.
2.最黑的洞是太陽的半徑相同.
3.如果太陽突然變成一個(gè)黑洞,地球?qū)⒈涣⒓次诉M(jìn)去.
4.如果你直視著一個(gè)黑洞,它會(huì)出現(xiàn)完全黑的.
5.距離黑洞的引力是如此之強(qiáng),即使光也無法逃脫被稱為“事件視界的史瓦西半徑.