Geomagnetic Storms - Thought Leadership
... Solar activity follows a roughly 11-year cycle. The next maximum in solar activity is expected to occur in late 2012 or early 2013 (see Figure 1). This is based on observations of sunspot activity and other metrics of solar activity, and points to an increase in the number of solar flares and the ej ...
... Solar activity follows a roughly 11-year cycle. The next maximum in solar activity is expected to occur in late 2012 or early 2013 (see Figure 1). This is based on observations of sunspot activity and other metrics of solar activity, and points to an increase in the number of solar flares and the ej ...
Astro 10: Introductory Astronomy
... within which they solidify, and this corresponds to a very narrow time range when they could incorporate Al-26. Time scale <~20,000 yrs very early in formation. • 3. CAI’s are enriched in Mg-26 relative to the other parts of the meteorite which cooled later and that enrichment is consistent across w ...
... within which they solidify, and this corresponds to a very narrow time range when they could incorporate Al-26. Time scale <~20,000 yrs very early in formation. • 3. CAI’s are enriched in Mg-26 relative to the other parts of the meteorite which cooled later and that enrichment is consistent across w ...
in the Solar System!
... The inner solar system contains Mercury, Venus, Earth and Mars. These four planets are closest to the Sun. The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto. The inner planets are separated ...
... The inner solar system contains Mercury, Venus, Earth and Mars. These four planets are closest to the Sun. The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto. The inner planets are separated ...
Slide 1
... Abundance Scales and Notations Most commonly used: Atoms by number, N Normalized to a reference element Astronomical abundance scale: normalized to H, the most-abundant element in universe eH = 1012 atoms converted to log scale: A(H) = log eH = 12 abundances are measured relative to H, e.g., N(Fe)/N ...
... Abundance Scales and Notations Most commonly used: Atoms by number, N Normalized to a reference element Astronomical abundance scale: normalized to H, the most-abundant element in universe eH = 1012 atoms converted to log scale: A(H) = log eH = 12 abundances are measured relative to H, e.g., N(Fe)/N ...
The Sun - Centra
... The behavior of the Sun’s Sun s magnetic field shows trends which provide Dthis field is generated and evolves. Dynamo crucial information on how Successful models for the solar dynamo must explain several observations: 1. Sun follows a cycle with mean period of 11 years (8-15 year range) 2. Sunspot ...
... The behavior of the Sun’s Sun s magnetic field shows trends which provide Dthis field is generated and evolves. Dynamo crucial information on how Successful models for the solar dynamo must explain several observations: 1. Sun follows a cycle with mean period of 11 years (8-15 year range) 2. Sunspot ...
The Peculiar Physics of Line-Driving
... * Massive, hot, luminous stars have strong stellar winds * Driven by line-scattering of stellar radiation * Highly unstable, leading to: - high speed rarefactions ...
... * Massive, hot, luminous stars have strong stellar winds * Driven by line-scattering of stellar radiation * Highly unstable, leading to: - high speed rarefactions ...
- The 5th state of matter
... Summary: beautiful filament-systems are often shown by h t e astonishing development of the modern astronomy. Most of these filaments have an exact circular cross section. Filaments have the same interesting characteristics from a diameter of 0.01 mm to that of many 1000 of light-years. Filaments ar ...
... Summary: beautiful filament-systems are often shown by h t e astonishing development of the modern astronomy. Most of these filaments have an exact circular cross section. Filaments have the same interesting characteristics from a diameter of 0.01 mm to that of many 1000 of light-years. Filaments ar ...
Slides in PDF format
... outcome of planetesimal formation: Parent bodies of meteorites are, as a matter of fact, not always unique. The formation process of the H chondrite parent bodies (and by extension, most planetesimals) must have been ...
... outcome of planetesimal formation: Parent bodies of meteorites are, as a matter of fact, not always unique. The formation process of the H chondrite parent bodies (and by extension, most planetesimals) must have been ...
The Sun`s X- ray Emission During the Recent Solar
... registered on SphinX were much lower in general than any seen in the previous four solar cycles, when reliable spacecraft measurements began about 50 years ago. ...
... registered on SphinX were much lower in general than any seen in the previous four solar cycles, when reliable spacecraft measurements began about 50 years ago. ...
The Solar Wind Power from Magnetic Flux
... et al. 2000, Fig. 6], which is determined from the charge state distributions of heavy elements. The freezing-in temperature is set low in the corona, where the solar wind draws ions out faster than they can equilibrate (through ionization and recombination) to the local electron temperature. One ex ...
... et al. 2000, Fig. 6], which is determined from the charge state distributions of heavy elements. The freezing-in temperature is set low in the corona, where the solar wind draws ions out faster than they can equilibrate (through ionization and recombination) to the local electron temperature. One ex ...
ncam-program-2016 - Cline Observatory
... The Compositions of Small Planets The NASA Kepler Mission has demonstrated that planets larger than Earth yet smaller then Neptune are common around Sun-like stars. Although Kepler determined the physical sizes of hundreds of such worlds, we know virtually nothing about their masses and, by inferenc ...
... The Compositions of Small Planets The NASA Kepler Mission has demonstrated that planets larger than Earth yet smaller then Neptune are common around Sun-like stars. Although Kepler determined the physical sizes of hundreds of such worlds, we know virtually nothing about their masses and, by inferenc ...
Spectral measurements of visible solar direct
... Abstract The characteristics of the solar energy input over Jeddah were investigated. Global and direct solar radiation were detected daily and recorded from sunrise to sunset. The instruments used were a pyranometer and two pyrheliometers (of the Epply type) positioned over the old building of the ...
... Abstract The characteristics of the solar energy input over Jeddah were investigated. Global and direct solar radiation were detected daily and recorded from sunrise to sunset. The instruments used were a pyranometer and two pyrheliometers (of the Epply type) positioned over the old building of the ...
Teacher`s Guide - Discovery Education
... Standards Link—Selecting this option displays a single screen that lists the national academic standards the video addresses. Teacher Resources—This screen gives the technical support number and Web site address. ...
... Standards Link—Selecting this option displays a single screen that lists the national academic standards the video addresses. Teacher Resources—This screen gives the technical support number and Web site address. ...
Composition of the Sun - Indiana University Astronomy
... strength, and vs. wavelength. You may save this file for printing by using the "f" key in MOOG at the appropriate time. MOOG also writes a summary of its output to the file "out2." The solar sub-directory includes additional model atmospheres to allow you to determine how sensitively your derived ir ...
... strength, and vs. wavelength. You may save this file for printing by using the "f" key in MOOG at the appropriate time. MOOG also writes a summary of its output to the file "out2." The solar sub-directory includes additional model atmospheres to allow you to determine how sensitively your derived ir ...
Advanced Composition Explorer
Advanced Composition Explorer (ACE) is a NASA Explorers program Solar and space exploration mission to study matter comprising energetic particles from the solar wind, the interplanetary medium, and other sources. Real-time data from ACE is used by the NOAA Space Weather Prediction Center to improve forecasts and warnings of solar storms. The ACE robotic spacecraft was launched August 25, 1997 and entered a Lissajous orbit close to the L1 Lagrangian point (which lies between the Sun and the Earth at a distance of some 1.5 million km from the latter) on December 12, 1997. The spacecraft is currently operating at that orbit. Because ACE is in a non-Keplerian orbit, and has regular station-keeping maneuvers, the orbital parameters at right are only approximate. The spacecraft is still in generally good condition in 2015, and is projected to have enough fuel to maintain its orbit until 2024. NASA Goddard Space Flight Center managed the development and integration of the ACE spacecraft.