【】

  发布时间:2024-11-10 07:05:12   作者:玩站小弟   我要评论
In the first image NASA released from the Webb telescope, some galaxies look like strings of stretch 。

In the first image NASA released from the Webb telescope, some galaxies look like strings of stretched taffy.

That's because the universe itself has altered our view of the deep cosmos.

Astronomers recently pointed the colossal James Webb Space Telescope at a cluster of galaxies dubbed SMACS 0723. Crucially, galaxies are enormously massive objects as they contain hundreds of billions of stars, millions of black holes, and perhaps trillions of planets. The combined mass of these galaxies warps space, like a bowling ball sitting on a mattress.

This warped space essentially creates a "lens" that we look through. So the light from the galaxies behind this galactic cluster that we (or the Webb telescope) ultimately see is distorted. It's an occurrence called "gravitational lensing." As the Space Telescope Science Institute (which runs the telescope) explains: "It's like having a camera lens in between us and the more distant galaxies."

Mashable GamesSEE ALSO:The James Webb telescope's first stunning cosmic images are here

Albert Einstein predicted the effect of gravitational lensing over a century ago. Some of the galaxies we can view below in Webb's first deep view into the cosmos, then, are magnified, and some are profoundly stretched or distorted.

Mashable Light SpeedWant more out-of-this world tech, space and science stories?Sign up for Mashable's weekly Light Speed newsletter.By signing up you agree to our Terms of Use and Privacy Policy.Thanks for signing up!

"They've been magnified by the gravity of the cluster, just like Einstein said they would," NASA astrophysicist Jane Rigby said at the reveal of Webb's first scientific images.

thousands of galaxies in deep spaceNASA calls this image "Webb’s First Deep Field." It's an image of the galaxy cluster "SMACS 0723." The mass of the galaxies distorts, and magnifies, more distant galaxies in the backgroundCredit: NASA / ESA / CSA / STScI

In the image above, the cluster of white-looking, ethereal galaxies are some 4.6 billion years old. They formed around the same time as the sun and Earth, Rigby said. It's these white galaxies that magnify and alter the view behind.

These more distant objects, which include both the red dots and bizarrely-distorted galaxies, are among the oldest objects in the cosmos. "All the super faint, dark-red tiny dots, as well as many of the brighter, strangely shaped objects in this astounding image are extremely distant galaxies that no human eye has seen before," Harald Ebeling, an astronomer at the University of Hawaii Institute for astronomy, said in a statement.


Related Stories
  • Yes, there are 100 million rogue black holes wandering our galaxy
  • Webb telescope's new dazzling photos prove it has perfect vision
  • A NASA rover just found trash on Mars
  • The most mysterious asteroids in the solar system
  • Why landing a spaceship on the moon is still so challenging

The faintest objects in this Webb image are some 13.1 billion years old, Rigby said. Yet Webb will soon look even farther into the past, over 13.5 billion years ago, soon after the first stars and galaxies formed.

The deep space observatory

The Webb telescope — a collaboration between NASA, the European Space Agency, and the Canadian Space Agency — is designed to make unprecedented discoveries. "With this telescope, it's really hard not to break records," Thomas Zurbuchen, an astrophysicist and NASA’s associate administrator for the agency's Science Mission Directorate, recently said at a press conference.

Here's how Webb will achieve unparalleled things:

  • Giant mirror: Webb's mirror, which captures light, is over 21 feet across. That's over two and a half times larger than the Hubble Space Telescope's mirror. Capturing more light allows Webb to see more distant, ancient objects.

    "We're going to see the very first stars and galaxies that ever formed," Jean Creighton, an astronomer and the director of the Manfred Olson Planetarium at the University of Wisconsin–Milwaukee, told Mashable last year.

  • Infrared view: Unlike Hubble, which largely views light that's visible to us, Webb is primarily an infrared telescope, meaning it views light in the infrared spectrum. This allows us to see far more of the universe. Infrared has longer wavelengths than visible light, so the light waves more efficiently slip through cosmic clouds; the light doesn't as often collide with and get scattered by these densely-packed particles. Ultimately, Webb's infrared eyesight can penetrate places Hubble can't.

    "It lifts the veil," said Creighton.

  • Peering into distant exoplanets: The Webb telescope carries specialized equipment, called spectrometers, that will revolutionize our understanding of these far-off worlds. The instruments can decipher what molecules (such as water, carbon dioxide, and methane) exist in the atmospheres of distant exoplanets — be it gas giants or smaller rocky worlds. Webb will look at exoplanets in the Milky Way galaxy. Who knows what we'll find.

    "We might learn things we never thought about," Mercedes López-Morales, an exoplanet researcher and astrophysicist at the Center for Astrophysics-Harvard & Smithsonian, told Mashable in 2021.

TopicsNASA

  • Tag:

相关文章

  • Whyd voice

    Amazon's Echo made controlling music with your voice easy-peasy, but its sound quality could be a lo
    2024-11-10
  • 四川辣椒醬怎麽做好吃

    四川辣椒醬也是比較有名的,它聞起來香噴噴,吃起來味道也是非常不錯的,一般來說四川辣椒醬主要選擇的就是朝天椒,另外還需要八角和芝麻等一些配料,吃起來香辣無比有很好的提高食欲的作用  ,要想把四川辣椒醬做的比
    2024-11-10
  • 耳朵發炎腫痛怎麽辦?

    耳朵對於我們來說是很重要的器官 ,有些人平時不注意保養自己的耳朵 ,導致耳朵出現發炎腫痛的現象,對於日常生活以及工作的影響是很大的,出現耳朵發炎之後是需要積極進行治療的 ,越早治療越好  ,如果長時間拖下去是會
    2024-11-10
  • 生完小孩乳房脹痛該怎麽辦

    很多的媽媽們生完孩子,就要進入哺乳期 。因為認識到母乳喂養的重要性 ,媽媽都不會選擇牛奶喂養,堅持自己哺乳 。可是,在哺乳期,媽媽們也會麵臨很多的乳房問題。例如脹痛。那麽,生完小孩乳房脹痛該怎麽辦呢?首先媽
    2024-11-10
  • Slack goes down again, prompting anxiety everywhere

    Panic briefly took over on Tuesday when everyone's favorite messaging app/millstone went down tempor
    2024-11-10
  • 寶寶睡覺蓋多少被子合適

    寶寶的身體抵抗力是比較弱的,很容易會受到疾病的感染 ,所以在寶寶睡覺的時候 ,我們應該要給寶寶蓋一張被子,如果是夏天,隻需要蓋一張很薄的床單就可以了 ,而冬天就需要給寶寶蓋多一兩張被子。我們在給寶寶蓋被子的
    2024-11-10

最新评论