How fast is the Universe expanding? Cosmologists just got more confusedCosmologyHotly anticipated technique fails to resolve disagreement over speed of cosmic expansion — for now.#Hotly anticipated technique fails to resolve disagreement over speed of cosmic expansion — for now.#Credit: NASA/ESA/SPL...
Cosmologists(宇宙学家) can't agree on how fast the universeis expanding because the two methods they use to find out givedifferent results. Now a third method involving gravitational wavescould help break the deadlock.Gravitational waves are the waves in space-time whoseexistence was confirmed in...
Theoretically, an expanding universe must have started from a single point. => 从理论上说,一个膨胀的宇宙一定是从一个点开始的。 By measuring how fast the universe is expanding, astronomers calculated backwards and figured out when it burst into life. => 通过测量宇宙膨胀的速度,天文学家们计算出...
This does not mean that Earth is at the center of the cosmos. Instead, the finding told scientists that the universe is expanding and that there is a direct relationship between how far apart two objects are and how fast they are receding from one another. The Hubble constant has a value...
galaxy two megaparsecs away from our galaxy was receding twice as fast as a galaxy only one megaparsec away. This estimate became known as the Hubble Constant, which proved for the first time that the universe was expanding. Astronomers have been recalibrating it—with mixed results—ever since...
Since it first exploded into existence 13.8 billion years ago, the universe has been expanding, dragging along with it hundreds of billions of galaxies and stars, much like raisins in a rapidly rising dough.
The size of the Sun compared to Earth. Speed Of Light TheSpeed of Light(SOL) is the ultimate speed limit in the Universe. Einstein taught us that the faster you go, the more of that energy becomes Mass (E=MC2), and as you approach SOL, the energy used to increase your speed becomes...
如果宇宙膨胀得过快 If the universe had been expanding much faster, 它就会快速排空 it would have emptied out so fast, 你就不会有时间形成星系、 you wouldn't have had time to make galaxies, 行星和人类 planets, people. 可一切都存在 The fact that we're here 意味着一定有人上演了刹车好戏 ...
The reader must remain a tantalized spectator rather than an involved participant, since the appropriate language for describing the details in much of science is mathematics, whether the subject is expanding universe, subatomic particles, or chromosomes. Though the broad outline of a scientific ...
The universe is expanding, but the rate of that expansion is proving to be elusive. A new measurement of the universe’s expansion rate falls between two previously established rates, leading to more questions than answers.