Hubble announces discovery of other galaxies, December 30, 1924Jessica MacNeil
根据最后一段最后一句"When Hubble's study of nearby galaxies showed that the universe was in fact expanding,Einstein regretted modifying his elegant theory and viewed the cosmological constant term as his 'greatest mistake'."(当哈勃对附近星系的研究表明宇宙世界上是在膨胀中的时候,爱因斯坦遗憾地修改了...
根据第二段“We are trying to open up a whole new arena for finding other worlds by searching for planet candidates at X-ray wavelengths, a strategy that makes it possible to discover them in other galaxies(我们正试图开辟一个全新的领域,通过在X射线波长上搜索候选行星来寻找其他世界,这一策略使...
They include the discovery of new planets, stars, galaxies, and other celestial bodies. Astronomical discoveries help deepen our understanding of the universe and our place within it. 7. Cultural Discoveries: Cultural discoveries encompass aspects of different cultures, including traditions, customs, ...
Quasar, an astronomical object of very high luminosity found in the centres of some galaxies and powered by gas spiraling at high velocity into an extremely large black hole. The brightest quasars can outshine all of the stars in the galaxies in which th
The LAMOST survey, capable of taking 4,000 spectra in a single exposure, has released spectra for more than 10 million stars, approximately 220,000 galaxies, and some 71,000 quasars, twice as large as the spectra obtained from other ground-based sky survey telescopes put together. ...
of its member galaxies, the luminosity of the extended X-ray emission, and the high stellar mass content all point to a collapsed dark matter halo with total mass 10^14 M⊙, making it the most distant X-ray detected...
B.Talking with each other. C.Touching the exhibits. D.Exploring the place alone. 免费查看参考答案及解析 题目: Recently, a newdiscoveryhas been made in the field of biology that challenges our previous understanding of the origins of life on Earth. For decades, scientists believed that life em...
Afterwards, supported by the royal grant in recognition of his work, he was able to devote himself entirely to astronomy. His final achievements spread from the sun and moon to remote galaxies (of which he discovered hundreds), and papers flooded from his pen until his death in 1822. Among...
John Salzer, principal investigator for the study published today inAstrophysical Journal Letters, said that the 15 galaxies in the sample exhibit luminosities (a measure of their total light output) that indicate that they are massive systems like the Milky Way and other so-called "giant" galaxie...