facebook
twitter
rss
account
search
search
 

Astronomers determine color of distant planet for the first time

July 11, 2013 at 4:03 PM   |   Comments

GREENBELT, Md., July 11 (UPI) -- Astronomers using NASA's Hubble telescope say they've determined the color of a planet orbiting a star 63 light-years away -- and it's blue, like the Earth.

But that's where the comparison ends, they said. On this distant world the daytime temperature is nearly 2,000 degrees Fahrenheit with howling 4,500-mph winds.

The cobalt blue color comes not from the reflection of sunlight off oceans as it does on Earth, but rather from a hazy, blow-torched atmosphere containing high clouds laced with silicate particles, a NASA release said Thursday.

Silicates condensing in the heat could form very small drops of glass that scatter blue light more than red light, astronomers said.

The distant blue planet dubbed HD 189733b is among a bizarre class of planets called hot Jupiters, which orbit precariously close to their parent stars, and the Hubble findings provide new insights into the chemical composition and cloud structure of this class of exoplanets, scientists said.

"We obviously don't know much on the physics and climatology of silicate clouds, so we are exploring a new domain of atmospheric physics," science team member Frederic Pont of Britain's University of Exeter said.

© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
SpaceX Dragon returns safely from ISS, splashes into Pacfic Ocean SpaceX Dragon returns safely from ISS, splashes into Pacfic Ocean
2
Google exec breaks skydive record with dive from near-space Google exec breaks skydive record with dive from near-space
3
Powerful new microscope sees cell division in real time Powerful new microscope sees cell division in real time
4
Stone tools reveal Ice Age settlement in the Andes Stone tools reveal Ice Age settlement in the Andes
5
Coal-rich Poland wants concessions in EU climate deal Coal-rich Poland wants concessions in EU climate deal
Trending News
Around the Web
x
Feedback