Dark Matter May Be Older Than the Universe—And It Might Live Forever Two American High School Girls Rewrite 2,000 Years of Mathematics with Historic New Pythagorean Proof Once Deemed Impossible Aircraft View all Explosive Failure: Watch a German Rocket’s Fiery Crash on Europe’s Historic Spa...
第二段提到“ While the new telescope has spotted even older galaxies, dating to within 300 million years of the beginning of the universe, it's the size of these six galaxies that shock the researchers.”可知,这六个星系的大小尺寸是其 特别之处,因此让研究人员震惊。 故选C。 5.D 解析:词义...
Rather than being randomly distributed, each part of the galaxy has a distinct location or home. Within our galaxy are clusters of stars. Some clusters contain older stars while others contain young stars. Where they are tells us about the age and formation of our galaxy. Some parts of the...
Galaxy z8_GND_5296 formed 700 million years after the Big Bang, when the universe was just 5 percent of its current age. The galaxy is producing stars extremely rapidly, much more rapidly than the Milky Way. This is consistent with other galaxies that formed within one billion years of the...
题目 Which statement is a theory, and not a proven fact? (Text A) A.Our universe is the product of a black hole in another, older universe.B.The black hole in our galaxy is pulling a gas cloud toward itself.C.There are more than 100 billion galaxies in the universe.D.Black hol...
Moreover, the age of 53W091 is greater than the predicted age of the Universe at z = 1.55, under the assumption of a standard Einstein–de Sitter cosmology (for any Hubble constant greater than 50kms 1 Mpc 1 ), indicating that this cosmological model can be formally excluded....
Astronomers have employed theNASA/ESA James Webb Space Telescope (JWST) to observe the ‘inside-out’ growth of a galaxy in the early universe, a mere 700 million years after theBig Bang. This galaxy is one hundred times smaller than theMilky Way, yet it is surprisingly mature for so ear...
than 4–7 pc. We derive properties of the ionization sources in Firefly Sparkle using NIRSpec Prism spectra from two adjacent shutters (slit 1 and slit 2) covering the central brightest region of the Firefly Sparkle. Spectra and properties from slit 1 are shown in Fig.2, whereas spectra ...
Words You Always Have to Look Up How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-) Words in Disguise: Do these seem familiar? Why is '-ed' sometimes pronounced at the end of a word? Democracy or Republic: What's the difference?
A quasar can emit more energy in one second than our sun has in its entire lifetime. Quasars, which look like stars, are the most distant and energetic objects in the universe known so far. Most astronomers consider a quasar to be the very active nucleus of a distant galaxy in the ...