Extrasolar Planet's Missing Water Discovered
April 12, 2007 11:16 AM
comment(s) - last by
The debate on whether or not Osiris has water in its atmosphere continues
A new analysis again suggests that gas giant HD209458b currently has water in its atmosphere. The planet -- nicknamed Osiris -- is 150 light years away from Earth, located in the Pegasus constellation. The planet was first detected in late November 1999, with the help of astronomical spectroscopy.
The hot, Jupiter-like gaseous planet has been the target of research once scientists believed water could be located somewhere on the planet. Three teams of scientists previously believed there could be water in the planet's atmosphere, but those ideas were questioned after the NASA Spitzer Space Telescope was unable to provide evidence.
Travis Bartman, an astronomer working at Lowell Observatory,
believes he has discovered the missing water
after analyzing the light from a star when it passes through HD209458b's atmosphere.
Barman and researchers from Harvard University measured the light coming from Osiris as it reached the furthest part of the 3.5-day orbit it makes around the star. With the help of the Hubble Space Telescope, it was possible to further study water absorption in the planet's atmosphere. Each time the planet passes its parent star, it is possible to analyze how the atmosphere absorbs light passing from the star through the atmosphere.
Scientists will continue to study and conduct research to either confirm or deny Barman's research.
This article is over a month old, voting and posting comments is disabled
RE: more on the topic
4/13/2007 1:54:25 AM
the presence of water has nothing to do with carbon or silicone based life. The presence of water merely creates an environment much, much more stable for life to form in, increasing its probability greatly. For simple life molecules to form into larger living oranisms, they need nearly stable temperatures and a form of locomotion. Water spreads out heat so that changes in temperatures on a planet occur slowest in the largest bodies of water (kinda like our oceans) and the fluid motion of water provides a locomotion for these molecules which otherwise could not propel themselves to interact with other life like molecules. The other great benefit of water is that since most basic life molecules are hydrophobic (ie, they are repeled by water, like oil is), it causes all the life molecules to concentrate themselves together (like drops of oil in water), increasing their chances of encountering whatever other life molecules they might need to encounter to survive. Of course this could occur with out water, but water is a very good way to accomplish those three (and other) things which help the growth of life like molecules.
RE: more on the topic
4/13/2007 10:55:49 AM
> "the presence of water has nothing to do with carbon or silicone based life"
Untrue. Water is hugely important in the development of carbon-based life. But in silicon biochemistry it plays a much smaller part. For instance, let's look at the benefits you list. Water provides temperature averaging...from 0-100C, at least. That's also the most chemically active range for carbon-based compounds. But the temperature range for silicon is far wider....and long-chain silicon molecules are stable at much higher temperatures.
How about the fact that most "basic life molecules" in the carbon chain are hydrophobic? True...but the basic building blocks of the carbon cycle (CO2 and oxygen) are
, and thus water disperses them freely, both providing them to and dispersing them from organisms within it. But most silicon-based analogues to these (such as silicon dioxide) are hydrophobic as well, which means a "silicon cycle" could never develop within an aqueous enviroment....it would need some other agent.
This is why worlds without water are (so we think) unlikely to develop carbon-based life. But silicon-based life? If its possible at all, its very possible without water.
"Game reviewers fought each other to write the most glowing coverage possible for the powerhouse Sony, MS systems. Reviewers flipped coins to see who would review the Nintendo Wii. The losers got stuck with the job." -- Andy Marken
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Most Popular Articles
Microsoft's Windows 10 Leaves Lumia 530 Behind w/ 8 GB Storage Requirement
August 25, 2015, 4:02 PM
Kentucky Man Faces up to 10 Years in Prison for Shooting Drone Trespasser
August 13, 2015, 2:58 PM
Future of Lumia Uncertain as Microsoft Lays Off 2,300, Closes 1 of 3 Finnish Offices
August 24, 2015, 6:14 PM
Aluminum 7003, Used in Roofing, May be Tapped by Apple for iPhone 6S/6S+
August 24, 2015, 4:45 PM
Best Buy Rapidly Ramps up Apple Watch Rollout After "Strong" Early Sales
August 26, 2015, 11:42 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information