您现在的位置是:知識 >>正文
【】
知識4人已围观
简介Of all the nearby planets, Saturn is most famous for its prominent rings. But NASA's James Webb Spac ...
Of all the nearby planets, Saturn is most famous for its prominent rings. But NASA's James Webb Space Telescope is reminding astronomers that Neptune's got bling, too.
A new telescope image shows Neptune, which often looks like a gigantic blue ball on an opaque background of blank space, as a darkened sphere with delicate hoops of dust and a scattering of moons. As with all of Webb's photos in infrared light (a type of light that's invisible to our eyes), it is surrounded by never-before-seen galaxies billions of light-years away.
Astronomers say the new photo is the clearest shot of the ice-giant planet taken in more than 30 years. Neptune's ghostly rings, some of which haven't been detected since Voyager 2 spotted them as it flew past in 1989, are on display. The pictures also reveal for the first time a band of clouds around a known vortex at the planet's south pole.
Tweet may have been deleted
Such vivid imagery taken of this solar system demonstrates the $10 billion telescope's ability to collect extraordinary data not just of the distant universe — its main purpose — but of celestial objects closer to home. Scientists believe Webb will unleash a golden age in our understanding of the cosmos.

"Not gonna lie. I ugly-cried when I saw THE FIRST JWST NEPTUNE IMAGES!" said Heidi Hammel, a Webb interdisciplinary scientist and Neptune expert, on Twitter. "'O M G - LOOK AT THE RINGS' I was yelling, making my kids, my mom, even my cats look. More than 20 years in the making, and JWST delivered."
Tweet may have been deleted
Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Top Stories newslettertoday.
Unless you're a Pluto truther, Neptune is the most distant planet in the solar system. In fact, even if Pluto were still considered the ninth planet, Neptune is still at times farther from the sun. It takes about 165 years for Neptune to make a loop around the star and is not visible to the naked eye. Yet if Earth were the size of a nickel, the ice giant would be as big as a basketball, according to the Space Telescope Science Institute in Maryland.
Related Stories
- Spectacular Webb telescope image shows a stellar death like never before
- Webb telescope snaps thrilling images of Jupiter and hurtling asteroids
- Carina Nebula images from Webb and Hubble telescopes paint stunning views of the universe
- Strange, unexpected things are happening on Neptune
- Webb telescope captures vivid galaxy collision in new photo
It's a dark, blustery world, whipped by winds faster than the speed of sound and only getting a dim twilight's worth of sun at its high noon.
Tweet may have been deleted
In Webb's photo shoot on July 12, the telescope's near-infrared camera captured the planet's turbulent, windy atmosphere. The most prominent features are bright splotches in its lower half that indicate lofty methane ice clouds, according to the institute.
The Hubble Space Telescope's previous pictures of Neptune show the far-flung behemoth as a bright blue sphere because traces of methane gas register blue at visible wavelengths. But because methane strongly absorbs red and infrared light, it seems relatively dark through Webb's eyes.
TopicsNASA
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“夫榮妻貴網”。http://new.maomao321.com/news/52c1099937.html
相关文章
Uber's $100M settlement over drivers as contractors may not be enough
知識UPDATE: Sept. 7, 2016, 4:41 p.m. EDT。 A ruling in a different case on Wednesday, Sept. 7 may have ch ...
【知識】
阅读更多Instagram might soon let you send multiple photos and videos in DMs
知識Snapchat's continuing implosion is Instagram's gain.As more users flock to Instagram, primarily to s ...
【知識】
阅读更多The hashtag campaign saying 'Hear Me Out' about Ireland's abortion laws
知識On May 25 Irish citizens will vote in a referendum on whether to repeal the eighth amendment of the ...
【知識】
阅读更多
热门文章
- Darth Vader is back. Why do we still care?
- Here are some of the most creative graduation caps from the class of 2018
- Never forget that Donald Glover achieved early internet fame with a sketch about pooping his pants
- James Shaw Jr. had breakfast with the March For Our Lives crew
- This coloring book is here for all your relationship goals
- 'Black Panther' director commentary reveals sad, new Killmonger fact
最新文章
Cat gets stuck in the most awkward position ever
William Shatner revisits 'Star Trek II: The Wrath of Khan'
Facebook tests news feed update hours before Zuckerberg's F8 keynote
'Brooklyn Nine
Researchers create temporary tattoos you can use to control your devices
Rashida Jones calls out Pixar's lack of diversity