![]() ![]() This observation produced one of the first-ever temperature maps of an exoplanet. In 2007 NASA's Spitzer Space Telescope measured the infrared light, or heat, from the planet. At a distance of only 2.9 million miles from its parent star, the planet is so close that it is gravitationally "tidally locked" so that one side always faces the star and the other side is always dark. The planet HD 189733b was discovered in 2005. But this most recent Hubble observation gives confirming evidence, said the researchers. The team's study will be published online July 11 and will appear in the August 1 issue of the Astrophysical Journal Letters.Įarlier observations have reported evidence for the scattering of blue light on the planet. This means that the object that disappeared is blue because light was missing in the blue, but not in the red when it was hidden," said Pont. "We saw the light becoming less bright in the blue, but not in the green or the red. ![]() Hubble measured a small drop in light – about one part in 10,000 – when the planet went behind the star, and a slight change in the color of the light, too. This technique is possible because the planet's orbit is tilted edge-on as viewed from Earth therefore, it routinely passes in front of and then behind the star. The team used Hubble's Space Telescope Imaging Spectrograph to measure changes in the color of light from the planet before, during, and after the passage of the planet behind the parent star. "We obviously don't know much on the physics and climatology of silicate clouds, so we are exploring a new domain of atmospheric physics," said team member Frederic Pont of the University of Exeter, South West England, the United Kingdom. The observations yield new insights into the chemical composition and cloud structure of a bizarre "hot Jupiter" class planet, which orbits precariously close to its parent star.Ĭlouds often play key roles in planetary atmospheres, and detecting the presence and importance of clouds in hot Jupiters is crucial, say researchers. It has been intensively studied by Hubble and other observatories, and its atmosphere is dramatically changeable and exotic. ![]() The turbulent alien world, cataloged HD 189733b, is one of the nearest exoplanets to Earth that can be seen crossing the face of its star. The condensation temperature of silicates could form very small drops of glass that would scatter blue light more than red light. The cobalt blue color doesn't come from the reflection of a tropical ocean, but rather from a hazy blow-torched atmosphere and perhaps from high clouds laced with silicate particles. The planet's daytime atmosphere is nearly 2,000 degrees Fahrenheit, and it possibly rains glass – sideways – in howling 4,500-mile-per-hour winds. If seen directly it would look like a "deep blue dot," reminiscent of Earth's color as seen from space. Four Successful Women Behind the Hubble Space Telescope's AchievementsĪstronomers using NASA's Hubble Space Telescope have deduced the actual visible-light color of a planet orbiting another star 63 light-years away.Characterizing Planets Around Other Stars.Measuring the Universe's Expansion Rate.This event is expected to have 75-100 members, government officials, and regional stakeholders, and will be open to the media.Įmail with any questions or to purchase additional tickets. Nichols, Chief Evangelist for Water (CEH2O) at The Blue Mind Network Sven Shockey, VP, Design Director, SmithGroup.Brenna Preisser, President, Business Acceleration Division and Chief Strategy Officer, Brunswick.Williams, Esq., Chief Communications & Stakeholders Engagement Officer and Executive Vice President, DC Water (moderator) Nichols will join a group of experts for a discussion on Environmental, Social & Governance (ESG), sustainability, technology and innovation, health and wellness, and more. Nichols to share more about his book Blue Mind: The Surprising Science That Shows How Being Near, In, On, or Under Water Can Make You Happier, Healthier, More Connected, and Better at What You Do.įollowing his presentation, Dr. This September, we welcome author and marine biologist Dr. The Board of Trade, together with TD Bank, has been creating unique opportunities for our members to hear from noteworthy speakers, authors, and presenters for the past 15 years through our Morning Star Speaker Series. ![]()
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