Tracking the weather on an exoplanet
Scientists have begun gathering increasingly detailed information about the atmosphere and weather on the exoplanet HD189733B, 63 light years away with an orbit that produces a transit every 2.2 days.
It appears that the temperature rises with increasing altitude, reaching 3,000 degrees at the top of the atmosphere. There are also strong winds blowing from the cold to the hot side of the planet.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Scientists have begun gathering increasingly detailed information about the atmosphere and weather on the exoplanet HD189733B, 63 light years away with an orbit that produces a transit every 2.2 days.
It appears that the temperature rises with increasing altitude, reaching 3,000 degrees at the top of the atmosphere. There are also strong winds blowing from the cold to the hot side of the planet.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
“high-altitude winds blowing from the exoplanet’s hot day side to the cold night side with speeds of several kilometres per second”
I wonder what the escape velocity is at “high-altitude” on this gas giant. Will the atmosphere eventually be blown away leaving an airless rocky core similar to mercury? Could this planetary system be similar to ours but in a much earlier stage of development?
Evidence from several hot Jupiter exoplanets already shows their atmospheres being driven away by the heat, including this particular exoplanet.
As for whether this planetary system is like ours but in an earlier stage of development, this is not likely, though certainly not known for sure. The planetary arrangements of this particular system now is very different than anything presently theorized for the early solar system.