Sentences with phrase «solar luminosity»
Solar luminosity refers to the total amount of energy that the Sun emits or gives off. It is a measure of how bright and powerful the Sun is, and it plays a crucial role in sustaining life on Earth by providing heat and light. Full definition
is inconsistent with rising GHG levels but entirely consistent with the gradual decline in the bicentennial component of solar luminosity since just prior to 1990
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«Enhanced CO2 Greenhouse to Compensate for Reduced Solar Luminosity on Early Earth.»
This is inconsistent with rising GHG levels but entirely consistent with the gradual decline in the bicentennial component of solar luminosity since just prior to 1990: -
Values are expressed relative to pre-industrial conditions (CO2 = 280 ppm; solar luminosity = 342 W / m2); a reference line of zero is given for clarity.
1979 Tobias Owen, et al., «Enhanced CO2 Greenhouse to Compensate for Reduced Solar Luminosity on Early Earth.»
As solar luminosity gradually increased through time, concentrations of greenhouse gases would have to have been much higher than today.
IRAS 16547 - 4247 is an object emitting strong radiation with about 60 times solar luminosity and being surrounded by high - density molecular cloud with a mass of 1300 times solar mass in a distance of 9500 light years away from the Earth.
In providing answers, Kasting explains why Earth has remained habitable despite a substantial rise in solar luminosity over time, and why our neighbors, Venus and Mars, haven't.
How about an explanation of how «solar effects» explain the past 30 years of warming when solar luminosity has been pretty much constant over that period?
I think the projected incease in solar luminosity means that Earth will have a runaway venus - style climate eventually.
Even though most of the visible radiation is concentrated in a few discrete emission lines, the total apparent brightness of the brightest is the equivalent of tens of thousands of solar luminosities.
Fouka P., Fröhlich C., Spruit H. and Wigley T.M. (2006) Variations in Solar Luminosity and their Effect on the Earth's Climate, Nature, 443, 161 - 166.
RR - Lyrae have the same time - averaged luminosity (about 49 solar luminosities or an absolute magnitude MV = +0.6).
For the inner few kiloparsecs of the elliptical galaxies, the velocity dispersion = 220 × (L / L *) 0.25, where L * is a characteristic galaxy luminosity (around 10 billion solar luminosities).
where M and L are the mass and luminosity of the star, respectively, is a solar mass, is the solar luminosity and is the star's estimated main sequence lifetime.
Half the matter of the star falls on to the black hole and feeds it, and that generates a luminous flare of a billion or 10 billion solar luminosities.»
The peak absolute luminosity appears to be about 50,000 times the luminosity of the Sun, but the largest percentage of known open clusters has a brightness equivalent to 500 solar luminosities.
It orbits an aged, spectral type G star (KIC 11904151) of 0.895 Solar - mass and 1.06 Solar - diameter with around 1.00 Solar luminosity, which is estimated to be at least 7.4 billion years old.
The most luminous stars emit several million solar luminosities.
Astronomers usually refer to the luminosity of an object in terms of solar luminosities, with one solar luminosity being equal to the luminosity of the Sun.
The most luminous supernovae shine with 1017 solar luminosities.
Layer your view of shifting continents with data on atmospheric composition, temperature, biodiversity, day length, and solar luminosity, to get a more complete view of our dynamic planet.
This is shown, among others, by the sunspot data (Fig. 1) as well as measurements of the solar luminosity from satellites (Fig. 2).