facebook
twitter
rss
account
search
search
 

Deep blue planet looks like Earth, rains glass

By Kristen Butler, UPI.com   |   July 11, 2013 at 5:13 PM   |   Comments

July 11 (UPI) -- From 63 light years away, the blue planet HD 189733b may look a little bit like Earth, but that's where the similarities end.

Earlier observations from NASA's Hubble Space Telescope found evidence of blue light scattering from the planet, and recent measurements from Hubble's Imaging Spectrograph confirmed that the planet is indeed blue.

But the blue is not a reflection of water, as it is on Earth. Rather, the cobalt color is the result of hazy, high clouds full of silicate particles essentially "blow-torched" in the atmosphere.

HD 189733b is only 2.9 million miles from its star, so close it is gravitationally locked, meaning one side always faces the star. Day side and night side temperatures can differ by about 500 degrees Fahrenheit, causing fierce winds.

On this planet, day side temperatures can reach nearly 2,000 degrees Fahrenheit. Silicates condensing in the heat could form very small drops of glass that rain, possibly sideways in 4,500-mph winds.

Hubble and other observatories studying HD 189733b have found its turbulent atmosphere to be "changeable and exotic."

The planet belongs to an unusual class known as "hot Jupiters," which orbit precariously close to their stars. Researchers say these findings can help explain the the chemical compositions and cloud structures of the entire class.

© 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
Social network Ello getting thousands of requests per hour Social network Ello getting thousands of requests per hour
2
NASA photos show Aral Sea is now just a sliver NASA photos show Aral Sea is now just a sliver
3
Mount St. Helens shows signs of awakening Mount St. Helens shows signs of awakening
4
Apple releases fix for 'Shellshock' virus Apple releases fix for 'Shellshock' virus
5
Windows 9 expected to be previewed Tuesday after leaks get the jump on Microsoft Windows 9 expected to be previewed Tuesday after leaks get the jump on Microsoft
Trending News
x
Feedback