A giant planet where it rains glass HD 189733 b – Earthtopomaps
HD 189733 b
A giant planet where it rains glass HD 189733 b – Earthtopomaps
DISCOVERED 2005
PLANET TYPE: Gas Giant
This far-off blue planet may look like a friendly haven – but don’t be deceived!. Weather here is deadly. The planet’s cobalt blue color comes from a hazy, blow-torched atmosphere containing clouds laced with glass. Howling winds send the storming glass sideways at 5,400 mph (2km/s), whipping all in a sickening spiral. It’s death by a million cuts on this slasher planet!
HD 189733 b is a gas giant exoplanet that orbits a K-type star. Its mass is 1.13 Jupiters, it takes 2.2 days to complete one orbit of its star, and is 0.0313 AU from its star. Its discovery was announced in 2005.
Huble’s Space Telescope Imaging Spectrograph measured changes in the color of light from the planet before, during and after a pass behind its star. There was a small drop in light and a slight change in the color of the light. “We saw the light becoming less bright in the blue but not in the green or red. Light was missing in the blue but not in the red when it was hidden,” said research team member Frederic Pont of the University of Exeter in South West England.” This means that the object that disappeared was blue.”
Earlier observations have reported evidence for scattering of blue light on the planet. Hubble observations confirmsed the evidence.
If seen directly, this planet would look like a deep blue dot, reminiscent of Earth’s color as seen from space. That is where the comparison ends.
On this turbulent alien world, the daytime temperature is nearly 2,000 degrees Fahrenheit, and it possibly rains glass — sideways in howling, 4,500-mph winds. The cobalt blue color comes not from the reflection of a tropical ocean as it does on Earth, but rather a hazy, blow-torched atmosphere containing high clouds laced with silicate particles. Silicates condensing in the heat could form very small drops of glass that scatter blue light more than red light.
Hubble and other observatories have made intensive studies of HD 189733 b and found its atmosphere to be changeable.
A) ORBITAL RADIUS 0.03126 AU
B) ORBITAL PERIOD 2.2 days
C) ORBITAL ECCENTRICITY 0
Planet Comparison:
HD 189733 b Jupiter MASS 1.13 Jupiters RADIUS 1.13 x Jupiter
Star Comparison HD_189733 Our Sun MASS 0.79 x Our Sun:
RADIUS 0.75 x Our Sun
How long to Travel Here from Earth?
D) TRAVEL SPEED 60 Miles per hour
E) TRAVEL TIME 721 Million years whit: Auto ( Car ).
F) TRAVEL SPEED: 671 Million miles per hour
G) TRAVEL TIME: 65 Years ligth speed.
A giant planet where it rains glass HD 189733 b – Earthtopomaps
Detection Method: Radial Velocity
The radial velocity method measures slight changes in a star’s velocity as the star and the planet move about their common center of mass. Astronomers can detect these variances by analyzing the spectrum of starlight. In an effect known as Doppler shift, light waves from a star moving toward us are shifted toward the blue end of the spectrum.
If the star is moving away, the light waves shift toward the red end of the spectrum.
This happens because the waves become compressed when the star is approaching the observer and spread out when the star is receding. The effect is similar to the change in pitch we hear in a train’s whistle as it approaches and passes.
Observed By: Haute-Provence Observatory
Haute-Provence Observatory
Haute-Provence Observatory
Source: Nasa Sites Thumbnails image Heic 1312 a
In the search for Earth-like planets, astronomers uncover a strange blue world.
Why is HD 189733 b blue? Watch this video to find out.
HD 189733 b is located 63 light-years from Earth. This illustration shows how the planet would appear up close.
To date, more than 60 exoplanets (black circles) have been observed transiting their host star.
The Hubble Space Telescope (above) launched into space in 1990.
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Research
Revised September 29, 2023
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