Geography, 14.04.2020 18:39 carterhoward
Today, astronomers can detect and measure stellar parallax for thousands of the nearest stars, providing us with direct evidence that Earth really does orbit the Sun. Moreover, as the Parallax Angle animation shows (return to the main "Parallax" screen, and select the "Parallax and Distance" button), these measurements allow us to calculate distances to these relatively nearby stars. If we hope to use parallax to measure distances to even more-distant stars, which of the following telescopes would be most useful?
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a. An extremely large telescope built at the best observing site on Earth
b. A larger version of the Hubble Space Telescope, placed in Earth orbit
c. A telescope placed on the same orbit of the Sun as Earth, but on the opposite side of the Sun
d. A telescope that orbits the Sun in the outer solar system
Answers: 3
Geography, 22.06.2019 16:30
Which characteristics are true of the arabian desert? multiple answers choose all answers that are correct. a. is mostly below sea level b. covers almost the entire arabian peninsula c. contains the largest sand sea in the world d. has very few people living there
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Geography, 22.06.2019 19:40
Why did the people of kamchatka oppose a mining project there
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Geography, 22.06.2019 22:00
Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.
Answers: 1
Geography, 22.06.2019 23:40
If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.
Answers: 2
Today, astronomers can detect and measure stellar parallax for thousands of the nearest stars, provi...
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