April 19, 2024, 04:36:22 pm
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
Forever
Login with username, password and session length
News
: Update About Cuba Underwater Megalithic Research
http://www.timstouse.com/EarthHistory/Atlantis/bimini.htm
Home
Help
Arcade
Gallery
Links
Staff List
Calendar
Login
Register
Amazing Old Stars Give Birth Again
Atlantis Online
>
Forum
>
Space
>
the Universe
>
Amazing Old Stars Give Birth Again
Pages: [
1
]
Go Down
« previous
next »
Print
Author
Topic: Amazing Old Stars Give Birth Again (Read 60 times)
0 Members and 123 Guests are viewing this topic.
Bianca
Superhero Member
Posts: 41646
Amazing Old Stars Give Birth Again
«
on:
January 21, 2008, 10:31:34 am »
View of a star cluster in outer space.
Astronomers poring over a young star
180 light years from Earth have found
evidence that stellar birth can lead to
the formation of a planet only millions
of years later, a mere blink on the
cosmic timescale.
(AFP/NASA-HO/File)
Amazing Old Stars Give Birth Again
Jeanna Bryner
Staff Writer
SPACE.com
Two old stars appear to be gearing up for a second generation of planet formation, a phenomenon astronomers say they have never seen before.
"This is a new class of stars, ones that display conditions now ripe for formation of a second generation of planets, long, long after the stars themselves formed," said UCLA astronomy graduate student Carl Melis, who reported the findings at a recent meeting of the American Astronomical Society in Austin, Texas.
The stars are BP Piscium in the constellation Pisces and TYCHO 4144 329 2, which resides in the constellation Ursa Major. The exact ages of the stars are unknown, but it is estimated they are at least hundreds of millions or possibly billions of years old, and might have already given birth to planets long ago.
"Most astronomers now believe that most stars are accompanied by first-generation planets of some sort, even if the planets are not massive enough to be picked up by the radial velocity [detection] technique," Melis said.
«
Last Edit: January 21, 2008, 10:36:14 am by Bianca
»
Report Spam
Logged
Your mind understands what you have been taught; your heart what is true.
Bianca
Superhero Member
Posts: 41646
Re: Amazing Old Stars Give Birth Again
«
Reply #1
on:
January 21, 2008, 10:37:50 am »
Second generation of planets
The unusual thing about these stars is that they appear to be giving birth to planets again.
"We currently understand planet formation to occur around stars when they are very young and enshrouded in dusty and gaseous disks, the material necessary to form planetary bodies," Melis told SPACE.com. "This material is completely used up after a couple to ten million years after the star is born and is not replenished during the star's life. As such, we would never expect a star to undergo planet formation late in its life as the necessary conditions are not present."
How they can do this is still unclear, but the stars seem to have kept many of their youthful qualities. For instance, the researchers found orbiting disks of gas and dust extended around the stars, and, in the case of BP Piscium, jets of gas being ejected into space. These gas-and-dust rings provide the fodder for the making of planetesimals, such as comets and asteroids that can merge to form larger bodies, along with planets.
"With all these characteristics that match so closely with young stars, we would expect that our two stars would also be young," Melis said. "As we gathered more data, however, things just did not add up."
Report Spam
Logged
Your mind understands what you have been taught; your heart what is true.
Bianca
Superhero Member
Posts: 41646
Re: Amazing Old Stars Give Birth Again
«
Reply #2
on:
January 21, 2008, 10:39:27 am »
Aging stars
The lack of lithium gave away the true stellar ages. Since stars burn lithium as they get older, younger stars should pack large stores of the chemical element. The astronomers found, however, that BP Piscium contained much less lithium than would be expected for a young star of its mass.
"There is no known way to account for this small amount of lithium if BP Piscium is a young star," Melis said. "Rather, lithium has been heavily processed, as appropriate for old stars. Other spectral measurements also indicate it is a much older star."
The researchers speculate that the senior stars might be borrowing material from their neighbors to construct new worlds.
"Our team believes that these stars, as they aged and began to expand into giant stars, engulfed very short-period companion stars orbiting around them," Melis said. "Interactions with these companions caused matter to be flung into disks surrounding the two stars."
Top 10 Star Mysteries
Video: When Stars Collide
Video: Searching for SuperStars
Original Story: Amazing Old Stars Give Birth Again
Report Spam
Logged
Your mind understands what you have been taught; your heart what is true.
Pages: [
1
]
Go Up
Print
« previous
next »
Jump to:
Please select a destination:
-----------------------------
Atlantis Online - Messages
-----------------------------
=> Messages
=> Administrative Messages
=> Commemorating Dates in History
=> Alerts & Warnings
=> Upcoming Events, Releases & Ads
=> Television: Shows & Events
-----------------------------
the Coffee Shop
-----------------------------
=> the Coffee Shop
=> Atlantis: Polls & News
=> Poltical Alerts
=> Causes & Activism
-----------------------------
Videos, Documentaries & Online Movies
-----------------------------
=> Ancient History & Lost Civilizations
=> Ghosts, UFOs & the Esoteric
=> Music, Entertainment & the Arts
=> Conspiracies & Suppressed Knowledge
=> Documentary & Videos
-----------------------------
Ages of the Earth
-----------------------------
=> The Early Earth, Geology & Fossils
=> Dinosaurs
=> Catastrophes & Mass Extinctions
=> Ice Age
=> Humanity's Origins & Civilization's First Steps
-----------------------------
Mythology & Heroic Sagas of Culture & Myth
-----------------------------
=> Mythology
=> Greek Mythology
=> Arthurian Myth
=> Quest for King Arthur
-----------------------------
Atlantis
-----------------------------
=> Atlantis & the Atlantic Ocean
=> Atlantis: Theories & Speculation
=> Plato's Atlantis
=> the Scientific Atlantis
=> Geology & Atlantis
=> Atlantis & the New Age
=> Atlantis in the Media
-----------------------------
Satellite Discoveries & Alternate Archaeology
-----------------------------
=> Alternate Archaeology
=> Satellite Discoveries & Aerial Archaeology
=> the Bock Saga
-----------------------------
Maps, Explorers & Adventurers
-----------------------------
=> the Oceans
=> Islands
=> the Bahamas, Bermuda, Cuba & the West Indies
=> Explorers & Adventurers
=> Maps, Cartographers & Cartography
-----------------------------
Egypt & the Pyramids
-----------------------------
=> Gods of Egypt
=> Egypt & the Pyramids
=> the Giza Complex
=> the Dynasties of Egypt
=> Egypt: Latest Discoveries
-----------------------------
the Guanches, Basques, Berbers & Sea People
-----------------------------
=> Guanches, Basques & Berbers
=> Pirates, Phantom Islands & Stories of the Sea
=> the Sea People
-----------------------------
the Ancient World
-----------------------------
=> Neolithic Europe
=> Stonehenge & the Druids
=> the Library of Alexandria, Ancient Historians & Philosophers
=> Ancient Warfare
=> the Spartans
-----------------------------
the Dawn of Civilization
-----------------------------
=> Africa, the Cradle of Life
=> China & the Asian Empires
=> Eastern Mysticism, India, & the Ancient Far East
=> Zoroastrianism, Arabia & the Near East
=> the Sumerians
=> Ancient Asia Minor
=> Hawaii, Australia, Alaska & the Pacific Rim
-----------------------------
Ancient Mediterranean Cultures
-----------------------------
=> Minoan Crete
=> Phoenicians & Carthage
=> Mediterranean Islands
=> Israelities & the Kabbalah
=> Etruscans
=> Ancient Greece
=> Rome: Empire & Republic
-----------------------------
Ancient European Cultures
-----------------------------
=> The Picts & Celts
=> Ireland: History & Myths
=> Balkan History
=> Italy & Magna Graecia
=> the Vikings & Scandinavia
=> Germanic History
-----------------------------
Timelines of Ancient Europe
-----------------------------
=> History of Britain
=> Scotland: in History & Lore
=> Continental Europe: Past & Present
=> the Dark Ages
=> the Medieval World
=> The Renaissance
-----------------------------
the Ancient Americas
-----------------------------
=> the Ancient Americas
=> Peru: Mysteries & Prehistory
=> Mesoamerican & South American Cultures
===> Aztec
===> Incan
===> Olmec
===> Toltec & Teotihuacan
=> Mayan
=> Native American
=> Canada: Past & Present
-----------------------------
The Crusades, Templars & the Holy Grail
-----------------------------
=> the Crusades
=> the Knights Templar
=> The Holy Grail & Christian artifacts
=> The Sacred Feminine, the Cathars & Gnosticism
=> the Da Vinci Code
-----------------------------
Ancient Mysteries
-----------------------------
=> Philosophy
=> Ancient Mysteries
=> Lemuria, Mu & other sunken civilizations
=> Easter Island
=> Oak Island
-----------------------------
Archaeology & Anthropology
-----------------------------
=> Museums & Universities
=> Archaeology
=> Ancient Languages
=> Archaeological News
=> Underwater Archaeology
-----------------------------
Ancient Knowledge, Mysticism & Sacred Beliefs
-----------------------------
=> Ley Lines, Ancient Astronomy & Archeoastronomy
=> Prophecy, 2012, End Times & the End of the World
=> Sacred Symbols
=> The Ancient Arts: Astrology, Alchemy, the Tarot, Arcane Recondite Practices & the I Ching
-----------------------------
Search for the Sacred
-----------------------------
=> Angels & Angelology
=> Goddess Worship
=> Search for the Sacred
=> World Religions
=> the Urantia Book
=> Wicca, Witchcraft, Paganism & Ritual Magic
-----------------------------
Health & Healing
-----------------------------
=> Health, Healing & Medical News
=> Human Biology
=> Love & Relationships
=> Women's Studies
-----------------------------
Science & Technology
-----------------------------
=> Science, Physics & Technology
=> History of Science
=> Evolution vs. Intelligent Design
=> Human Genetics
-----------------------------
Earth Changes
-----------------------------
=> Earth Changes
=> Global Warming
=> Botany & Plant Life
===> Plants of the Americas that Changed the World
=> Antarctica & the Arctic
-----------------------------
Space
-----------------------------
=> NASA
=> Mars, the Red Planet
=> Life on Other Worlds
=> the Universe
=> Images from Space
-----------------------------
UFOs, Aliens & Future Science
-----------------------------
=> UFO's
=> Aliens & Alien Abduction
=> UFO Evidence & in the Media
=> Alternate History & Multiverses
=> Future Science
=> Time Travel
-----------------------------
the Occult
-----------------------------
=> Ghosts & Apparitions
=> Communicating with the Dead
=> Paranormal Events, Reincarnation & Near Death Experiences
=> the Enchanted World
=> the Supernatural
=> the Occult
-----------------------------
the Unexplained
-----------------------------
=> Cryptozoology
=> Bigfoot Sightings
=> the Unexplained
=> the Hollow Earth, Crop Circles, Strange Structures & Devices
=> Vanishings & Unsolved Murders
-----------------------------
Science Fiction & Fantasy
-----------------------------
=> Lord of the Rings
=> Science Fiction
=> King Kong, Gigantopithecus & the Mountain Gorilla
=> Godzilla, King of Monsters
=> Comic Books
===> Comic Book Creators
===> Videogames & Toys
-----------------------------
Halloween & Seasonal
-----------------------------
=> Halloween
=> Seasonal
=> Monsters of Myth, Movies & Folklore
=> Ghost Stories
=> the Zombie Apocalypse
-----------------------------
Genres of Film & Literature
-----------------------------
=> Universal Horror
=> H. P. Lovecraft
=> Horror
=> Dark Shadows
=> Twin Peaks
=> Online Horror Movies Sci-Fi & TV Series
-----------------------------
Arts & Literature
-----------------------------
=> Online Books & Research Papers
=> Classical Literature & Book Reviews
=> Art History
=> Architecture
=> Sculpture & Statuary
=> the Great Masters
=> Music
-----------------------------
Media & Film
-----------------------------
=> Cinema
=> the History of Film
=> Marilyn Monroe
=> Actresses & Models
=> Entertainment News
-----------------------------
Modern Historical Mysteries
-----------------------------
=> American History
===> Presidents of the United States
=> the World Wars
===> the Great Depression
=> the Holocaust
=> the Middle East: Past & Present
=> Modern History
===> the Industrial Age
===> Civil Rights
=> Great Cities of the World
=> the Kennedys: Their History & Assasinations
=> New York City: Then & Now
-----------------------------
September 11th, 2001
-----------------------------
=> September 11th: Conspiracies, Cover-ups & Remembrance
=> The World Trade Center Remembered
===> Life of the Twin Towers
=> Modern Warfare
=> Environmental Disasters & Mass Tragedies
-----------------------------
Suppressed Knowledge
-----------------------------
=> New World Order
=> Conspiracies
=> Suppressed Knowledge
=> Media Matters
-----------------------------
Politics
-----------------------------
=> the Barack Obama Administration
=> Conservatives, Trump, & Republican Politics
=> Joe Biden, Democratic Politics & News
=> Tea Party, Constitution, Libertarian Parties & Ron Paul
=> Politics & News
-----------------------------
Current Events
-----------------------------
=> Current Events & Odd Stories
=> The World Today
=> Financial News & the Economy
===> The History of Labor
=> Breaking News
-----------------------------
General Category
-----------------------------
=> Opinions & Editorials
=> Cartoons, Humor & Comic Strips
=> Ecology, Pets & the Animal Kingdom
=> General & Miscellaneous
=> Sports
=> Computers & the Internet
-----------------------------
Art, Graphics & Creative Writing
-----------------------------
=> Fantasy Art & Graphics
=> Creative Writing
===> Horror Fiction
=> Poetry
=> Photography & Models
=> Earth Images
-----------------------------
Past Events
-----------------------------
=> Case for Bush Impeachment/War Crimes
===> Bush Administration Torture Scandal
=> Campaign 2008
=> Atlantis Online - Memorial & Biography
===> Atlantis Online - Old Posts
Powered by
EzPortal
Loading...