Commentary on the Liquid Metallic Hydrogen Model of the Sun
... be placed in a direction which is orthogonal to the solar surface at the poles. This would explain why the expulsion of ions and electrons from the Sun is facilitated. The subsurface orthogonal placement of the liquid metallic hydrogen hexagonal planes thus accounts for the origin of fast solar wind ...
... be placed in a direction which is orthogonal to the solar surface at the poles. This would explain why the expulsion of ions and electrons from the Sun is facilitated. The subsurface orthogonal placement of the liquid metallic hydrogen hexagonal planes thus accounts for the origin of fast solar wind ...
ASTROPHYSICS LAB: THE LUMINOSITY OF THE SUN
... clouds are a bit tricky.... if the clouds are thick and dark (in which case, the experiment should probably have been postponed), some sunlight is blocked from reaching the earth (and is instead reflected back into space or absorbed by the cloud and then re-emitted in the invisible infrared).... in ...
... clouds are a bit tricky.... if the clouds are thick and dark (in which case, the experiment should probably have been postponed), some sunlight is blocked from reaching the earth (and is instead reflected back into space or absorbed by the cloud and then re-emitted in the invisible infrared).... in ...
The Sun
... The Big Questions The Coronal Heating Process Sun’s corona is hotter than 1, 000, 000o C while the visible surface is at about 6, 000o C . The nature of the processes that heat the corona is a mystery. The Nature of Solar flares Time scales at which Solar flares occur and the exact physics behind it ...
... The Big Questions The Coronal Heating Process Sun’s corona is hotter than 1, 000, 000o C while the visible surface is at about 6, 000o C . The nature of the processes that heat the corona is a mystery. The Nature of Solar flares Time scales at which Solar flares occur and the exact physics behind it ...
The Sun The Sun is a very typical main sequence star. It contains 100
... these par9cles interact only via the weak force most are able to stream out of the Sun’s core without being absorbed. Experiments designed to detect solar neutrinos discovered the phenomenon of neutrino ...
... these par9cles interact only via the weak force most are able to stream out of the Sun’s core without being absorbed. Experiments designed to detect solar neutrinos discovered the phenomenon of neutrino ...
The sun and the solar corona
... established by purely theoretical considerations, based on the measured energy output (luminosity), radius and mass, using of course all the applicable laws of physics. Making some simplifying assumptions, such as spherical symmetry, no rotation and no magnetic fields, basic models of the Sun’s inte ...
... established by purely theoretical considerations, based on the measured energy output (luminosity), radius and mass, using of course all the applicable laws of physics. Making some simplifying assumptions, such as spherical symmetry, no rotation and no magnetic fields, basic models of the Sun’s inte ...
Document
... but these are very important for understanding how organic compounds might have formed in the solar system. They even contain complex compounds such as amino acids, the building blocks of proteins.” ...
... but these are very important for understanding how organic compounds might have formed in the solar system. They even contain complex compounds such as amino acids, the building blocks of proteins.” ...
Goal: To understand the lifetime of a star and how the
... • So, eventually we get 2 protons to collide. • What do we get? • No, we don’t get a Helium atom with 2 protons and no neutrons. Those don’t exist. • Another difficulty in the fusion process is that you turn 2 protons into deuterium (which is hydrogen with a neutron in it) + stuff. • So, that means ...
... • So, eventually we get 2 protons to collide. • What do we get? • No, we don’t get a Helium atom with 2 protons and no neutrons. Those don’t exist. • Another difficulty in the fusion process is that you turn 2 protons into deuterium (which is hydrogen with a neutron in it) + stuff. • So, that means ...
solar photosphere and chromosphere
... • increasing emission – increasing involvement of magnetic fields • more and more braiding/reconnection • acoustic wave emission along magnetic flux tubes: much more efficient than in free turbulence ...
... • increasing emission – increasing involvement of magnetic fields • more and more braiding/reconnection • acoustic wave emission along magnetic flux tubes: much more efficient than in free turbulence ...
cugetări asupra unor fenomene legate de masa
... If we accept a simple observable phenomenon, which is known that light propagates in the (so-called) total vacuum. This simple observation leads to the observation that there should be unessential medium through which to spread the light, which is essentially a sine wave, which propagates only evide ...
... If we accept a simple observable phenomenon, which is known that light propagates in the (so-called) total vacuum. This simple observation leads to the observation that there should be unessential medium through which to spread the light, which is essentially a sine wave, which propagates only evide ...
Measuring the Distances to the Stars: Parallax What sets the parallax limit? 1
... vt vr tan ...
... vt vr tan ...
Forging the elements
... How long can the sun survive by burning hydrogen? Hydrogen burning lifetime = Total mass available for conversion Rate of conversion Lifetime ~ mass available x c2 / L ~ 1010 years. Our sun is roughly half-way through its hydrogen burning phase. ...
... How long can the sun survive by burning hydrogen? Hydrogen burning lifetime = Total mass available for conversion Rate of conversion Lifetime ~ mass available x c2 / L ~ 1010 years. Our sun is roughly half-way through its hydrogen burning phase. ...
powerpoint
... • The core basically becomes one giant atom (and the electrons fuse with the protons). • The energy to do this (remember it takes energy to break down atoms if they are smaller than iron) comes from the gravitational collapse. ...
... • The core basically becomes one giant atom (and the electrons fuse with the protons). • The energy to do this (remember it takes energy to break down atoms if they are smaller than iron) comes from the gravitational collapse. ...
ppt
... • The Sun as a paradigm of a low-mass star. Standard test case for stellar evolution. Sun is used to callibrate stellar models • Neutrinos from the Sun: only direct evidence of solar energy sources (original proposal for the Homestake experiment that led to the Solar Neutrino Problem) • Neutrino osc ...
... • The Sun as a paradigm of a low-mass star. Standard test case for stellar evolution. Sun is used to callibrate stellar models • Neutrinos from the Sun: only direct evidence of solar energy sources (original proposal for the Homestake experiment that led to the Solar Neutrino Problem) • Neutrino osc ...
Astro Quote - University of North Alabama
... tools. Large telescopes site on top of mountaintops using the light from objects to tease out new information about the universe. We have realized that there is radiation from objects the human eye cannot even see. This radiation can be very low energy infrared and radio waves, or very high energy X ...
... tools. Large telescopes site on top of mountaintops using the light from objects to tease out new information about the universe. We have realized that there is radiation from objects the human eye cannot even see. This radiation can be very low energy infrared and radio waves, or very high energy X ...
To understand the deaths of stars and how it depends on
... • The core basically becomes one giant atom (and the electrons fuse with the protons). • The energy to do this (remember it takes energy to break down atoms if they are smaller than iron) comes from the gravitational collapse. ...
... • The core basically becomes one giant atom (and the electrons fuse with the protons). • The energy to do this (remember it takes energy to break down atoms if they are smaller than iron) comes from the gravitational collapse. ...
The Measurement of the Astronomical Unit
... The motion of the Sun in the sky tells us something about the rotation of the Earth, and the Earth's orbit around the Sun. An important motion of the Sun itself is its rotation about its own axis. This can be measured by using sunspots as tracers of that rotation, as Galileo first did in 1612. Why i ...
... The motion of the Sun in the sky tells us something about the rotation of the Earth, and the Earth's orbit around the Sun. An important motion of the Sun itself is its rotation about its own axis. This can be measured by using sunspots as tracers of that rotation, as Galileo first did in 1612. Why i ...
Lesson 1 The Sun and Other Stars
... The stars that produce the most energy make about 10 million times more energy than the Sun. The least-productive stars make only one-hundredth as much energy as the Sun. The Sun is an average-sized star and the largest object in the solar system. The Sun’s diameter is about 1,390,000 kilometers (86 ...
... The stars that produce the most energy make about 10 million times more energy than the Sun. The least-productive stars make only one-hundredth as much energy as the Sun. The Sun is an average-sized star and the largest object in the solar system. The Sun’s diameter is about 1,390,000 kilometers (86 ...
angular momentum in the solar system
... of space permeated by gases (called the solar wind) emanating from the sun to a distance of several hundred billion miles out; (3) at the location of the hypothetical "Oort cloud" of comets, believed to be about 2 light-years out. The Oort cloud is an evolutionary construct and has not been shown to ...
... of space permeated by gases (called the solar wind) emanating from the sun to a distance of several hundred billion miles out; (3) at the location of the hypothetical "Oort cloud" of comets, believed to be about 2 light-years out. The Oort cloud is an evolutionary construct and has not been shown to ...
THE SUN - University of Mass Lowell, Space Science Laboratory
... low-frequency radio wave (i.e., frequency less than the plasma frequency) impinges upon a plasma, the local charged particles have sufficient time to rearrange themselves so as to “cancel out” the oscillating electric field and thereby “screen” the rest of the plasma from the oscillating E-field. Th ...
... low-frequency radio wave (i.e., frequency less than the plasma frequency) impinges upon a plasma, the local charged particles have sufficient time to rearrange themselves so as to “cancel out” the oscillating electric field and thereby “screen” the rest of the plasma from the oscillating E-field. Th ...
Dark matter
... Only 20% of the dark matter is MACHOs: Some of the dark matter in galaxy “halos” consists of exotic matter. Suppose there existed a type of massive elementary particle that didn’t absorb, emit, or scatter photons. We’d detect such a particle only by its gravitational pull on luminous matter. ...
... Only 20% of the dark matter is MACHOs: Some of the dark matter in galaxy “halos” consists of exotic matter. Suppose there existed a type of massive elementary particle that didn’t absorb, emit, or scatter photons. We’d detect such a particle only by its gravitational pull on luminous matter. ...
NEBULAR HYPOTHESIS OF LAPLACE
... condensed due to excessive cooling arotate with the still cooling and contracting central nucleus of the nebula and thus the outer ring (layer) was separated from the remaining part of the nebula. This separated ring of material started moving around the nebula.nd so it could not ...
... condensed due to excessive cooling arotate with the still cooling and contracting central nucleus of the nebula and thus the outer ring (layer) was separated from the remaining part of the nebula. This separated ring of material started moving around the nebula.nd so it could not ...
The Sun's Crowded Delivery Room July 6, 2007
... Formation of the Sun might have involved the formation and rapid life span (only 4 million years) of a massive star, 30 times more massive than the Sun. Astronomical observations indicate that such stars pass through a stage in which they lose mass--up to an Earth mass per day!-- rapidly by blowing ...
... Formation of the Sun might have involved the formation and rapid life span (only 4 million years) of a massive star, 30 times more massive than the Sun. Astronomical observations indicate that such stars pass through a stage in which they lose mass--up to an Earth mass per day!-- rapidly by blowing ...
Space Weather
... Effects on GNSS Global navigation satellite systems, such as the global positioning system (GPS) operated by the United States, have become an essential part of aviation, and the FAA’s NextGen modernization plan calls for even more utilization of this technology. In a simplified fashion, this techno ...
... Effects on GNSS Global navigation satellite systems, such as the global positioning system (GPS) operated by the United States, have become an essential part of aviation, and the FAA’s NextGen modernization plan calls for even more utilization of this technology. In a simplified fashion, this techno ...
Document
... Sir Arthur Eddington (1882 – 1944) „At first sight it would seem that the deep interior of the sun and stars is less accessible to scientific investigation than any other region of the universe.” ...
... Sir Arthur Eddington (1882 – 1944) „At first sight it would seem that the deep interior of the sun and stars is less accessible to scientific investigation than any other region of the universe.” ...
Sun
The Sun (in Greek: Helios, in Latin: Sol) is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. It is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Its diameter is about 109 times that of Earth, and it has a mass about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System.About three quarters of the Sun's mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, including oxygen, carbon, neon and iron.The Sun is a G-type main-sequence star (G2V) based on spectral class and it is informally referred to as a yellow dwarf. It formed approximately 4.567 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became increasingly hot and dense, eventually initiating nuclear fusion in its core. It is thought that almost all stars form by this process. The Sun is roughly middle aged and has not changed dramatically for four billion years, and will remain fairly stable for another four billion years. However, after hydrogen fusion in its core has stopped, the Sun will undergo severe changes and become a red giant. It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury, Venus, and possibly Earth.The enormous effect of the Sun on the Earth has been recognized since prehistoric times, and the Sun has been regarded by some cultures as a deity. Earth's movement around the Sun is the basis of the solar calendar, which is the predominant calendar in use today.