原级：astronomer
1. danci.911chaxun.com
1. The astronomers were stunned when they checked landmarks against the last mapping of Venus, carried out between 1990 and 1994 by the US probe Magellan.
2. The telescope will be open to astronomers from home and abroad upon the completion of the test run by the end of this year.
3. But now astronomers have used a more refined method to conclude that our galaxy's mass is slightly less than 1 trillion solar masses.
4. Despite using advanced computer models to simulate how such a stellar rocket could form, astronomers have no concrete explanation.
5. Tully said astronomers may eventually find a few cosmic structures in the void, but it would still be nearly empty.
6. Astronomers have taken a baby step in trying to answer the cosmic question of where we come from.
7. But many if not most of them are simply too small to detect from afar with the tools now available to astronomers.
8. When Eris was spotted on the edge of the solar system in 2003, it forced astronomers to rethink their definition of what made a planet.
9. Solar research labs in developed countries said Chinese astronomers could take treasured solar data with this ambitious plan.
10. astronomers的反义词
10. Astronomers believe the Milky Way has about four arms made up of hydrogen gas, dust and stars spiraling out from its center.