时间:2025-08-02 14:29:07 来源:网络整理编辑:百科
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.
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
Over 82,000 evacuate as Blue Cut fire rapidly spreads in southern California2025-08-02 14:27
Thanks, Trump: I guess we are cool with George W. Bush now2025-08-02 14:21
Obamas sign book deal worth 'tens of millions'2025-08-02 13:15
Apple dropping lightning for a USB2025-08-02 13:03
Visualizing July's astounding global temperature records2025-08-02 13:00
The latest from the journalist investigating the crime in Sweden2025-08-02 12:51
Scientists are firing lasers at dinosaur fossils, and the result is awesome2025-08-02 12:40
Looks like Hillary Clinton and the internet are on the same page about this Mike Pence email thing2025-08-02 12:20
Over 82,000 evacuate as Blue Cut fire rapidly spreads in southern California2025-08-02 11:53
Sad military drone that just wanted to fly around for a bit crashes into tree :(2025-08-02 11:52
Darth Vader is back. Why do we still care?2025-08-02 13:50
Smash Mouth became the voice of the resistance then threw it all away2025-08-02 13:37
Meet one of Indonesia's most unlikely YouTube celebrities: The president2025-08-02 12:46
Amazon, Apple, Microsoft and Twitter join bathroom fight with trans teen2025-08-02 12:39
Felix the cat just raised £5000 for charity because she's the hero we all need2025-08-02 12:39
Trump's absurd statement on health care gets trolled because how could it not?2025-08-02 12:32
Fun dad allows family dog to get a very unfortunate haircut2025-08-02 12:23
Sorry Queen Elizabeth, this American claims to be your rightful heir2025-08-02 12:11
17 questions you can answer if you're a good communicator2025-08-02 11:56
Weapons and ammo in 'Horizon: Zero Dawn' are confusing, so here's a guide2025-08-02 11:49