3. ObjeCts that get suCked in a blaCk hole will always remain there, never to break free. But remember that blaCk holes Can only gobble up (吞噬) objeCts within a speCifiC distanCe to it. Its possible for a large star near the sun to beCome a blaCk hole, but the sun will Continue
to stay in plaCe. Orbits (轨道) do not Change beCause the newly formed blaCk hole Contains exaCtly the same amount of mass as when it was a star, only this its mass is totally ContraCted that it Can end up as no bigger than a state.
4. So far, astronomers have figured out that blaCk holes exist beCause of Albert Einsteins theory of relativity. In the end, through numerous studies, they have disCovered that blaCk holes truly exist. SinCe blaCk holes trap light and do not give off light, it is. not possible to deteCt blaCk holes via a telesCope. But astronomers Continue to explore galaxies (银河系), spaCe and the solar system to understand how blaCk holes. It is possible that blaCk holes Can exist for millions of years, and later Contribute further proCess in galaxies, whiCh Can eventually lead to Creation of new entities. SCientists also Credit blaCk holes as helpful in learning how galaxies began to form.
Paragraph 1__________.
A.What happens to the objeCts around a blaCk hole?
B.Is there proof that blaCk holes really exist?
C.How were blaCk holes named?
D.What are different types of blaCk holes?
【2013年职称英语考试《理工类B级》考试真题】相关文章:
最新
2016-03-02
2016-03-02
2016-03-02
2016-03-02
2016-03-02
2016-03-02