Can you please check, in «Six degrees» the question that asks to explain the
faint young sun paradox?
This estimate takes into account the fact that the ultraviolet irradiance of the Sun was considerably larger in the distant past, as confirmed by astronomical measurements
of younger Sun - like stars in the nearby galaxy.
Moreover, the rate of loss for Carrington - type events, which are thought to occur frequently
in young Sun - like stars, was found to be greater still.
I do not believe this is a tenable solution to a faint
young sun at Earthlike orbit.
She reckoned that a rare form of old «metal poor» star, one with one - thousandth the iron content of our
own young sun, carries an internal clock, one composed of the radioactive elements uranium and thorium.
The data revealed that the stragglers are bright and hot, as would be expected
for young suns.
Astronomers have discovered a new planet in another solar system orbiting a red giant star that provides clues into what may happen to our own solar system five billion years from now when our own,
younger sun becomes a gigantic old star.
«Our analysis suggests that such space weather events may prove to be a key driver of atmospheric losses for exoplanets orbiting an
active young Sun - like star,» the authors write.
In the early days of our solar system the
tempestuous young sun boiled oxygen and other volatile materials out of the inner system, leaving planets that formed there relatively oxygen - poor.
Art
handlers Young Sun Han and Clive Murphy putting the finishing touches on Jeff Koons's Gazing Ball (Farnese Hercules)(2013) before the opening of the artist's first gallery solo show, Jeff Koons: Gazing Ball, 525 and 533 West 19th Street, New York, 2013.
New York artist Kymia Nawabi beat out
contestants Young Sun and Sara in the final episode of Bravo's Work of Art last week.
In an interview with Hyperallergic, Korean - American
artist Young Sun Han reveals how the bizarre rumours about North Korea and the phantoms of his ancestors have influenced his recent exhibition.
And viewers of Work of Art might be curious to see
what Young Sun Han has progressed following his reality TV stardom.
CU study shows how early Earth kept warm enough to support life Scientists tackle faint
young sun paradox with 3 - D climate models Solving...
The disks, made of gas and dust that whirl
around young suns, are too small and distant to be seen by visible - light telescopes; however, the infrared glow of their warm dust showed up easily using Spitzer's infrared detectors.
This finding also answered another geological problem: that of the so - called «Faint
Young Sun Paradox».
* Professor Manuel Guedel from University of Vienna, Austria, will discuss high - energy processes
in young suns and their effects on exoplanets around them.
Pictured here are Ota Fine Arts's Yoriko Tsuruta (far left), Glenn Scott Wright from Victoria Miro (fourth from left), David Zwirner art handlers Joel Fennell (second from left),
Young Sun Han (third from left), Kyle Combs (center, back), and Justin Davis Anderson (second from right), and Senior Partner Hanna Schouwink (right).
Then, you still insist on resolution of the
Faint Young Sun paradox withing the paradigm of greenhouse gases.
They weren't, and this «faint
young sun paradox» has puzzled scientists for decades.
The parent asteroid may have been born close to
the young sun, which hints that it is made of the same stuff that coalesced to form Earth (Science, DOI: 10.1126 / science.1174787).
But as
the young sun gradually grew warmer, Venus was too close for comfort.
That's the conclusion of a new simulation that calculates how heat from
the young sun, the Earth and the moon's own hot surface could have vaporized lunar metals to give the moon an atmosphere as thick as Mars».
In 1796 he proposed our solar system formed from a great cloud of gas and dust spinning around
the young sun.
In this artist's illustration,
the young Sun - like star Kappa Ceti is blotched with large starspots, a sign of its high level of magnetic activity.
«
Young sun - like star shows a magnetic field was critical for life on the early Earth.»
However, Namouni suggests that his model can still work if
the young sun flipped its poles at the same rate as the bulk of the mass in the disc orbited.
It showed that
the young sun was surrounded by a disk of gas and dust so agitated that particles in the hot, inner regions might be flung out to the cold, distant zone where comets formed.
«Earth's hydrosphere, if it even existed at the Hadean time, may have been frozen all the way down, which would have all but eliminated tidal dissipation or friction,» Zhong said, adding that a weaker, fainter
young Sun could have made such conditions possible in theory.
Similar ideas have also addressed the possibility of a fainter
young Sun, but direct observational evidence in the geological record is currently lacking, making it the subject of debate among scientists.
Heat from
the young sun vaporized any ice that dared to come near the inner planets.
Stuart Clark's article about the faint
young sun paradox (16 February, p 44) said that liquid water was present on...
SUPERFLARE Gusts of solar wind from
the young sun produced life - supporting molecules, researchers propose.
The paper addresses a major problem, one of the outstanding mysteries in the history of the solar system and Earth — the faint
young Sun paradox.
Researchers used computer programs to simulate the fate of objects circling
our young sun once its planetary disk was largely cleared of gas and dust.
The findings could be key to understanding how life started on Earth despite the faint
young Sun and havoc caused by collisions.
«Possible solution to «faint
young Sun paradox»: Primordial asteroid bombardment triggered atmospheric warming capable of sustaining liquid water.»
Earth's birthplace in the dusty nebula around
the young sun should have been hot enough to keep any water vaporised.
Wet Earth Erin Wayman's article «Faint
young sun» (SN: 5/4/13, p. 30), about how the early Earth stayed warm enough for liquid water, made me wonder about the effect of the temperature of the planet itself.