Galaxies - Stockton University
... In the Solar neighborhood, an average main-sequence star (excluding binary stars) is separated by of order 107 times its size from its nearest neighbors (1 Solar Radius vs. 1 pc). Galaxies on the other hand have sizes ranging from 1 to 100 Kpc, but are separated by of order 1 to 10 Mpc from their ne ...
... In the Solar neighborhood, an average main-sequence star (excluding binary stars) is separated by of order 107 times its size from its nearest neighbors (1 Solar Radius vs. 1 pc). Galaxies on the other hand have sizes ranging from 1 to 100 Kpc, but are separated by of order 1 to 10 Mpc from their ne ...
Characteristics of Our Galaxy
... Young thin disk stars are generally around one billion years or more in age. They have orbits of low eccentricity. They are mostly A and F stars, A,F,G,and K giants, some main-sequence dwarfs and white dwarfs. They are very metal rich, although less metal rich than those in the spiral arms.9 Interme ...
... Young thin disk stars are generally around one billion years or more in age. They have orbits of low eccentricity. They are mostly A and F stars, A,F,G,and K giants, some main-sequence dwarfs and white dwarfs. They are very metal rich, although less metal rich than those in the spiral arms.9 Interme ...
MCWP 3-16.7 Chapter 7: Astronomy
... precession) making one turn in 25,800 solar years or one platonic year (great year). This is caused by torque imposed on the Earth mostly by the Moon and Sun. Visualize it as a spinning top. As the spinning slows, the top begins to wobble creating a cone-shaped motion in its rotating axis. The Earth ...
... precession) making one turn in 25,800 solar years or one platonic year (great year). This is caused by torque imposed on the Earth mostly by the Moon and Sun. Visualize it as a spinning top. As the spinning slows, the top begins to wobble creating a cone-shaped motion in its rotating axis. The Earth ...
the gravitational force
... immeasurably small when both interacting particles are common objects such as baseballs or cars (which have masses roughly between 1 kg and 1000 kg). Furthermore, the gravitational force is utterly negligible when both particles are atoms or molecules since these have exceedingly small masses. On th ...
... immeasurably small when both interacting particles are common objects such as baseballs or cars (which have masses roughly between 1 kg and 1000 kg). Furthermore, the gravitational force is utterly negligible when both particles are atoms or molecules since these have exceedingly small masses. On th ...
On the irrelevance of being a PLUTO! Size Scale of Stars and Planets
... • Kuiper belt is probably the last stable location of the solar system where the escape velocity (~ 7 km/s) is much higher than rotation velocity (~ 5 km/s). Beyond this, the Sun’s gravity is too weak. • The Kuiper belt has to be studied in detail for information on early solar system and its edge. ...
... • Kuiper belt is probably the last stable location of the solar system where the escape velocity (~ 7 km/s) is much higher than rotation velocity (~ 5 km/s). Beyond this, the Sun’s gravity is too weak. • The Kuiper belt has to be studied in detail for information on early solar system and its edge. ...
Sample
... A) The phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun. B) The phase of the Moon must be full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun. C) The phase of the Moon can be new or full, and the nodes of ...
... A) The phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun. B) The phase of the Moon must be full, and the nodes of the Moon's orbit must be nearly aligned with Earth and the Sun. C) The phase of the Moon can be new or full, and the nodes of ...
October 2016 BRAS Newsletter - The Baton Rouge Astronomical
... General Relativity). But partly it was so bright because of the explosion’s intrinsic power: it released 10 54 ergs of energy in all directions, making GRB 130427A one of the most powerful gamma-ray bursts ever detected. The comparatively long life of the gamma-ray burst points to the death of a sta ...
... General Relativity). But partly it was so bright because of the explosion’s intrinsic power: it released 10 54 ergs of energy in all directions, making GRB 130427A one of the most powerful gamma-ray bursts ever detected. The comparatively long life of the gamma-ray burst points to the death of a sta ...
basics of astronomy through role play
... understand why moon rises every day late by about 50 mts understand how we see only one face of moon from the Earth Understand how the Earth goes around Sun; even while rotating. What is one year? Understand that at different position in the earth's orbit, different part of the stellar sphere would ...
... understand why moon rises every day late by about 50 mts understand how we see only one face of moon from the Earth Understand how the Earth goes around Sun; even while rotating. What is one year? Understand that at different position in the earth's orbit, different part of the stellar sphere would ...
Seasons and the Appearance of the Sky
... Summary: The Reason for Seasons • Earth’s axis points in the same direction (to Polaris) all year round, so its orientation relative to the Sun changes as Earth orbits the Sun. • Summer occurs in your hemisphere when sunlight hits it more directly; winter occurs when the sunlight is less direct. • ...
... Summary: The Reason for Seasons • Earth’s axis points in the same direction (to Polaris) all year round, so its orientation relative to the Sun changes as Earth orbits the Sun. • Summer occurs in your hemisphere when sunlight hits it more directly; winter occurs when the sunlight is less direct. • ...
Microsoft Word
... seven heavenly bodies “wandering” among the stars on the celestial sphere. These seven heavenly bodies were the sun, the moon and the planets Mercury, Venus, Mars, Jupiter and Saturn. The outermost planets (Neptune, Uranus and Pluto) also “wander” but the ancients didn't know about them because you ...
... seven heavenly bodies “wandering” among the stars on the celestial sphere. These seven heavenly bodies were the sun, the moon and the planets Mercury, Venus, Mars, Jupiter and Saturn. The outermost planets (Neptune, Uranus and Pluto) also “wander” but the ancients didn't know about them because you ...
CH. 7 - science1d
... galaxies is expanding, causing the distances to increase. These are incredible thoughts, yet scientific evidence supports them and many other intriguing conclusions about the nature of our universe. Universe is the term we use to refer to everything that physically exists: the entirety of space and ...
... galaxies is expanding, causing the distances to increase. These are incredible thoughts, yet scientific evidence supports them and many other intriguing conclusions about the nature of our universe. Universe is the term we use to refer to everything that physically exists: the entirety of space and ...
Alpha Centauri
... Never viewed from northern latitudes(around 40 degrees) Traveling south below the earths surface, across the equator you will see it. ...
... Never viewed from northern latitudes(around 40 degrees) Traveling south below the earths surface, across the equator you will see it. ...
No Slide Title
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display ...
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display ...
Seismic Observations of the Solar Interior
... inhomogeneities in the initial abundances Xo, Yo and Zo of hydrogen, helium, and heavy elements that survive the Hayashi phase have been suggested (199); these could have had a profound effect on the present structure of the sun. Gravitational settling leading to a helium-rich core has also been dis ...
... inhomogeneities in the initial abundances Xo, Yo and Zo of hydrogen, helium, and heavy elements that survive the Hayashi phase have been suggested (199); these could have had a profound effect on the present structure of the sun. Gravitational settling leading to a helium-rich core has also been dis ...
lecture04_2013_geo_heliocentric_theory
... • It ran contrary to their common sense: Every day, the sun, moon, and stars rotates around us. So, we “must be” at the center . . . ...
... • It ran contrary to their common sense: Every day, the sun, moon, and stars rotates around us. So, we “must be” at the center . . . ...
Science Planet Project-Uranus update final
... Does Uranus have water in any form? • It all comes down to density. The density of Uranus is the second least in the Solar System, after Saturn. In fact, it has a density that’s only a little higher than water. Since water is very common in the outer Solar System, astronomers suspect that the whole ...
... Does Uranus have water in any form? • It all comes down to density. The density of Uranus is the second least in the Solar System, after Saturn. In fact, it has a density that’s only a little higher than water. Since water is very common in the outer Solar System, astronomers suspect that the whole ...
Astronomical Circumstances
... may have much different fates. For example, small stars Once its hydrogen fuel is mostly consumed, a medium do not go through the giant stage but simply collapse sized star like our own will expand outward to become a into white dwarves after the main sequence. The death red giant. During this stag ...
... may have much different fates. For example, small stars Once its hydrogen fuel is mostly consumed, a medium do not go through the giant stage but simply collapse sized star like our own will expand outward to become a into white dwarves after the main sequence. The death red giant. During this stag ...
Pluto: Dwarf Planet - ASTR101
... • Pluto is a dwarf planet • Pluto has more moons than Mars • Its orbit is so highly inclined, and ellipUcal enough to come closer to the sun than any other planets • Only has 65% of the diameter of Earth’s moon • Very hard to see from Earth • Its orbit is so far from the Sun that even t ...
... • Pluto is a dwarf planet • Pluto has more moons than Mars • Its orbit is so highly inclined, and ellipUcal enough to come closer to the sun than any other planets • Only has 65% of the diameter of Earth’s moon • Very hard to see from Earth • Its orbit is so far from the Sun that even t ...
What CAN You See With a Telescope?
... planets. Since the asteroids were thought to be “minor planets,” it was assumed that they also rotated on their own axes. In 1810, Schröeter 6 thought Juno had a 27hour rotation rate. This is about four times the current value of 7.21 hours. An asteroid’s rotation rate is determined by measurin ...
... planets. Since the asteroids were thought to be “minor planets,” it was assumed that they also rotated on their own axes. In 1810, Schröeter 6 thought Juno had a 27hour rotation rate. This is about four times the current value of 7.21 hours. An asteroid’s rotation rate is determined by measurin ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.