Due to ______________, ancient astronomers like the Greeks and Egyptians had a different set of stars surrounding the North Celestial Pole than we do today with Polaris.
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Due to ______________, ancient astronomers like the Greeks and Egyptians had a different set of stars surrounding the North Celestial Pole than we do today with Polaris.
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- If you go out to look at the night sky tonight from central lowa, the North Star (aka Polaris) is located near the North Celestial Pole at an altitude of approximately 42 degrees above the horizon. Why is that the case?If you go on vacation down to the Florida Keys, the North Star (aka Polaris) located near the North Celestial Pole is found at an altitude of approximately 25 degrees above the horizon. Why is it found near that altitude?The right ascension and declination of the seven stars of the Big Dipper are given below: Star Right Ascension Declination Alkaid 13h48m +49° 19' Mizar 13h24m +54°56' Alioth 12h54m +55°58' 12h15m +57°02' 11h54m +53°42' Merak 11h02m +56°23' Dubhe 11h04m +61°45' (1) For what range of latitude are all the stars of the Big Dipper circumpolar? Megrez Phecda
- What is a variable magnitude?I am trying to plot the ground tracks of an orbit. But I am having a problem with finding the longitude. The equation for the longitude is shown in the image. Is the Theta GMST initially zero because the greenwich meridian points to the Aries point (x-axis). How do you calculate alpha or vernal equinox? I saw a formula for alpha which is alpha = arctan(ry/rx), but the formula was for Right Ascension angle. Is the right ascension angle the same as vernal equinox. If not, then what is the formula for vernal equinox.The two figures provided below show the motion of Stars A and B in the sky. Note that Star A is first visible above the horizon at noon. In what direction is Star B moving at 3:00 am? Celestial Sphere Rotation Path of Celestial Star B 1 Sphere Path of North Star North Star Star A 9 PM 3. North Earth's' Horizon Equator Celestial Sphere Rotation O A. west (to the left) B. east (to the right) O C. south (out of the page) OD. away from the horizon (up) E. toward the horizon (down)
- You are standing at Earth's North Pole. It is dark, and the stars are out. What is an accurate description of where you need to look in order to find Polaris (the North Star)? Select one: a. straight overhead b. directly on the horizon c. about halfway up from the horizon to the zenith d. the North Star is not visible from this locationIs wanting one answer which is to calculate the magnitude A-2BIf you go out at midnight and look at constellations along the zodiac (i.e. more or less along the ecliptic plane), and then go out at midnight six months later and do the same thing, by how many degrees will the center of your view (along the ecliptic, looking to the south) have shifted during those six months?
- For an observer located in the north pole, would the altitude of the stars in the east, increase, decrease, both, or stay the same?If a star is located exactly __________________ it will not appear to move during several hours of observing the night sky. A. on the celestial equator B. at the north celestial pole C. on your horizon D. due east E. at your zenith