Lecture04
... Earth’s rotation • Responsible for our familiar calendar “day”. • Period (of rotation) = 24 hours = (24 hours)x(60 min/hr)x(60s/min) =86,400 s • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the ...
... Earth’s rotation • Responsible for our familiar calendar “day”. • Period (of rotation) = 24 hours = (24 hours)x(60 min/hr)x(60s/min) =86,400 s • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the ...
1 1. The Solar System
... Furthermore, as it becomes clear from the above discussion, the observer must carefully determine the proper exposure time to get the best results. With astronomical objects, since most are inherently faint, it's true that the longer the exposure the better, provided -of course- we are away from sa ...
... Furthermore, as it becomes clear from the above discussion, the observer must carefully determine the proper exposure time to get the best results. With astronomical objects, since most are inherently faint, it's true that the longer the exposure the better, provided -of course- we are away from sa ...
the star
... Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light years from the Earth (now) and about 0.24 light years from Alpha-Centauri A and B. • Alpha-Centauri A and B – a double star system with a period of about ...
... Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light years from the Earth (now) and about 0.24 light years from Alpha-Centauri A and B. • Alpha-Centauri A and B – a double star system with a period of about ...
Nebulas & Stars
... Charles Messier was the first to discover a nebula He was originally looking for comets but he found a few smudges of color in the sky William Herschel discovered the first nebula ever, it was a Crab Nebula ...
... Charles Messier was the first to discover a nebula He was originally looking for comets but he found a few smudges of color in the sky William Herschel discovered the first nebula ever, it was a Crab Nebula ...
What theory best explains the features of our
... • extreme axis tilt — nearly tipped on its “side” — makes extreme seasons during its 84-year orbit. • moons also tipped in their orbits… ...
... • extreme axis tilt — nearly tipped on its “side” — makes extreme seasons during its 84-year orbit. • moons also tipped in their orbits… ...
Slide 1
... http://www.dustbunny.com/afk/index.html - Tough concepts put simply http://photojournal.jpl.nasa.gov/index.html - WOOF! great pics, and info about our solar system http://space.jpl.nasa.gov/ - You are here. - Solar system simulator that places all the planets right where they, were, are, or will be; ...
... http://www.dustbunny.com/afk/index.html - Tough concepts put simply http://photojournal.jpl.nasa.gov/index.html - WOOF! great pics, and info about our solar system http://space.jpl.nasa.gov/ - You are here. - Solar system simulator that places all the planets right where they, were, are, or will be; ...
File - greenscapes4you
... detector, such as a CCD, that records how much energy strikes its light-sensitive surface each second. Total luminosity and total apparent brightness take into account all photons across the entire electromagnetic spectrum. Once a star’s apparent brightness has been measured, the next step in determ ...
... detector, such as a CCD, that records how much energy strikes its light-sensitive surface each second. Total luminosity and total apparent brightness take into account all photons across the entire electromagnetic spectrum. Once a star’s apparent brightness has been measured, the next step in determ ...
Vulcan Chasers
... Joseph Le Verrier of France stood at the pinnacle o the astronomical world. His calculations had leCl to one of the supreme discoveries of astron orny Neptune, a giant world circling the sun in tlii frigid realm beyond Uranus, the hitherto most remote known planet. Neptune had been sighted by Joh ...
... Joseph Le Verrier of France stood at the pinnacle o the astronomical world. His calculations had leCl to one of the supreme discoveries of astron orny Neptune, a giant world circling the sun in tlii frigid realm beyond Uranus, the hitherto most remote known planet. Neptune had been sighted by Joh ...
Planetarium Key Points
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
The Electromagnetic Spectrum
... The brightest star in the constellation Ursa Minor is Polaris. In modern astronomy it is also called Alpha ( Ursa Minoris. The second brightest star Kocab (on the “bowl” itself) is known as Ursa Minoris If the Greek alphabet is used up, then Roman letters are used. ...
... The brightest star in the constellation Ursa Minor is Polaris. In modern astronomy it is also called Alpha ( Ursa Minoris. The second brightest star Kocab (on the “bowl” itself) is known as Ursa Minoris If the Greek alphabet is used up, then Roman letters are used. ...
Astronomy Unit - rachaelreeves
... Go over types of galaxies using photos (spiral, barred, elliptical, and irregulardetermined by shape) The Milky Way is a spiral galaxy, which is why in very dark skies we can see its bands Exploration: Show a blank sketch of the solar system and give worksheet with sketch on it to class. Have stud ...
... Go over types of galaxies using photos (spiral, barred, elliptical, and irregulardetermined by shape) The Milky Way is a spiral galaxy, which is why in very dark skies we can see its bands Exploration: Show a blank sketch of the solar system and give worksheet with sketch on it to class. Have stud ...
Astronomy Club
... Pluto. These orbits have an angle of 7 &17 degrees with respect to the earth's orbit respectively. But comets emerging out of the ‘Ourt Cloud’ have disordered orbit. Comets are mainly of two types. Those of the first type take more than 200 years for revolution around the sun and others takes less t ...
... Pluto. These orbits have an angle of 7 &17 degrees with respect to the earth's orbit respectively. But comets emerging out of the ‘Ourt Cloud’ have disordered orbit. Comets are mainly of two types. Those of the first type take more than 200 years for revolution around the sun and others takes less t ...
day04
... 76 years after that. (seen in 1910, 1986, and will return in 2061) Halley’s comet has an elliptical orbit extending out past Neptune. • William Herschel discovered Uranus in 1781 by accident. • After 50 years it was seen to deviate from an elliptical orbit, and a calculation led to the discovery of ...
... 76 years after that. (seen in 1910, 1986, and will return in 2061) Halley’s comet has an elliptical orbit extending out past Neptune. • William Herschel discovered Uranus in 1781 by accident. • After 50 years it was seen to deviate from an elliptical orbit, and a calculation led to the discovery of ...
Gravity - Alvinisd.net
... asteroids would fly off into space just like you would if you let go of a merry-go-round. 5 All objects are attracted to each other, so why are some attractions stronger than others? For example, Earth’s gravity has a more powerful affect on you than the Sun’s gravity. With the Sun’s gravitational p ...
... asteroids would fly off into space just like you would if you let go of a merry-go-round. 5 All objects are attracted to each other, so why are some attractions stronger than others? For example, Earth’s gravity has a more powerful affect on you than the Sun’s gravity. With the Sun’s gravitational p ...
SDO | SOLAR DYNAMICS OBSERVATORY HTTP://WWW.NASA
... common. Once you know the letter (based on it’s temperature), you can subdivide it for more precision from 0 (hotter) to 9 (cooler). We also track luminosity, or how bright is a star, with the numerals from I down to VII. Why do we need to know these things? Well, temperature can tell you about a st ...
... common. Once you know the letter (based on it’s temperature), you can subdivide it for more precision from 0 (hotter) to 9 (cooler). We also track luminosity, or how bright is a star, with the numerals from I down to VII. Why do we need to know these things? Well, temperature can tell you about a st ...
If you wish to a copy of this months Night Sky News
... On the morning of the 7th the Moon rises at around 07:00, and with Mercury and Venus present a photo opportunity in the south-east. Saturn, Mars and Jupiter can be found at this time too, hugging the line of the ecliptic traced towards the west. Take an opportunity to observe them during the first t ...
... On the morning of the 7th the Moon rises at around 07:00, and with Mercury and Venus present a photo opportunity in the south-east. Saturn, Mars and Jupiter can be found at this time too, hugging the line of the ecliptic traced towards the west. Take an opportunity to observe them during the first t ...
Spectral_Analysis
... Almost all the lines in light from extraterrestrial sources were attributed to known elements, however, some new lines also appeared in the solar spectrum. In 1868, astronomers realised that those lines must correspond to a previously unknown element. It was given the name helium, after the Greek wo ...
... Almost all the lines in light from extraterrestrial sources were attributed to known elements, however, some new lines also appeared in the solar spectrum. In 1868, astronomers realised that those lines must correspond to a previously unknown element. It was given the name helium, after the Greek wo ...
Chapter 2 Astronomy Notes
... eventually be counted as planets as well, and the Solar System could increase in size to dozens of planets. Distant Sedna, discovered in 2002 far beyond the Kuiper Belt and which is probably not much smaller than Pluto, was hailed by some in the press as the “tenth planet.” When Eris (originally des ...
... eventually be counted as planets as well, and the Solar System could increase in size to dozens of planets. Distant Sedna, discovered in 2002 far beyond the Kuiper Belt and which is probably not much smaller than Pluto, was hailed by some in the press as the “tenth planet.” When Eris (originally des ...
Search for Life in the Universe
... • Indirect detection of effect on parent star – Extrasolar planets around main sequence stars discovered in 1995 – Planets around neutron stars discovered previously – Spectroscopy (>100 cases): detect Doppler shift of stellar motion around center of mass – Astrometry (1 case): detect angular motion ...
... • Indirect detection of effect on parent star – Extrasolar planets around main sequence stars discovered in 1995 – Planets around neutron stars discovered previously – Spectroscopy (>100 cases): detect Doppler shift of stellar motion around center of mass – Astrometry (1 case): detect angular motion ...