Astronomy Expert Answers & Study Resources : Page 7

Question Planets do not twinkle because .

Question How is atmospheric pressure relevant to astronomy? .

Question Outer edge of the Earth atmosphere has a radius of 150 million kilometers. The solar radiation there has a power of 1370 W/m2 (the solar constant for Earth). The solar radiation is inversely proportional to the square of the distance from the sun. If the radius of the outer edge.

Question I'm working on a basic simulation system which will include planets with rings, I want to create dust and asteroids within a 3D ring but I'm struggling to find any stats on the sort of height ranges a ring might have (I can find inner and outer radius estimates, but.

Question On planet Oops, in the double star system of Uh-Oh, a group of scientists ave hypnotically regressed each other and remembered common past lifes. They are all reincarnate of great minds from some planet earth around a star called the Sun. Erastosthenes' reincarnate thinks that he remembers how to measure the.

Question Indicate whether the following statements are true or false. Indicate whether the following statements are true or false. (Select True, F-False. If the first is T and the rest F, enter TFFFF). A) A star's lifetime is inversely proportional to the cube of its mass. B) More massive stars live longer.

Question What is A relationship between altitude, latency? What is A relationship between altitude, latency?   .

Question One hypothesis for the origin of the moon is that the moon and the Earth were once one body, which split into two (the Gutierrez Theory). If we consider the Earth and moon an isolated system, how long was the day before the split? (Assume that the Earth-moon body was perfectly.

Question Possible Duplicate: Why are our planets in the solar system all on the same disc/plane/layer? I've noticed this in many pictures, Planets are shown with a single ring around them (in some particular plane). Taking extreme case... As gravity should act in all the directions, such planets must be covered with asteroids.

Question If Jupiter and Saturn are both in line with each other and the Sun and located on the same side with respect to the Sun, calculate the location of the center of mass of this system of three bodies with respect to the center of the Sun. Express your answer.

Question Planets are not obvious in their appearance from your backyard. If planets look like stars to the naked eye, how did our ancestors discover them? .

Question Id like to know about seeing things light years away. I understand that we see things when the light arrives to our vision on Earth, but I wanted to ask when we see objects light years away, are we looking into the past? .

Question Our neighbouring galaxy, the Large Magellanic Cloud, appears about 8 across on the sky and consists of about 1010 stars at a distance of 50 kpc. Its brightest stars have an absolute magnitude of –10.0. Which of the following is true? a) Individual main sequence stars are brighter than the limiting.

Question One of the brightest comets of the 20th century was Comet Hyakutake, which passed close to the sun in early 1996. The orbital period of this comet is estimated to be about 30000 years. Find the semi-major axis of this comet's orbit Compare it to the average sun-Pluto distance Compare it to the.

Question How to find the true anomally and radius of Halley's comet at a given start date and end date? On February 9, 1986, Halley’s Comet was at perihelion distance of 0.5872 AU and eccentricity 0.9673. Determine for January 1 1992 the true anomaly () and radius (r). Hint: Calculate the elapsed.

Question How many observers would it take to cancel out the number of photons produced in a medium sized star like our Sun, thus making it dark? (I want to consume more photons than the star is generating) .

Question In the mid-Atlantic region, heat is transferred to the earth crust from deep within the mantle primarily by means of A. Convection B. Conduction C. Radiation .

Question IP The Electric Field of the Earth The Earth produces an approximately uniform electric field at ground level. This electric field has a magnitude of 110 N/C and points radially inward, toward the center of the Earth. Find the surface charge density (sign and magnitude) on the surface of the Earth. Given.

Question In which climate zone, the warm mE air masses from the ocean to land causes heavy rainfall during the summer season? o Dry subtropical Monsoon climate o ce sheet climate O Mediterranean climate .

Question ISS 400 km period= 92 min 1). What orbital altitude do I need to have in order for the satellites period to equal 1 day? 2). What would that look like to a observer on the Earth looking up at the satellite? .

Question My son is getting interested in astronomy. I was thinking about getting him a scope when he gets a bit older, he is 4 now. At what age have other people gotten their kids telescopes? (I have a 10" dob that we use together) Also at what age is taking.

Question Suppose that Jupiter had a fifth Galilean satellite similar in size to our moon that orbited at a distance greater than that of Callisto. Use the knowledge that you have gained in this chapter to explain what you would predict for both the composition and the surface features of that.

Question Planetary rings are known to exist for all of the jovian planets. nearer to their planet than any of the planet's large moons. orbiting in the equatorial plane of their planet. composed of a large number of individual particles that orbit their planet in accord with Kepler's third law. all of the above .

Question How do I explain the unified model of active galactic nuclei?   .

Question I know that the Sun and hence the Solar System orbits around the galactic center of the Milky Way. Does this rotation cause any visible change in the night sky? I know that human life span is negligble compared to the time it takes the Sun to go around the galaxy,.

Question Is there a way to calculate if an impact from a given asteroid (say 5 miles in diameter, solid rock to which we know the mass) would start an impact winter? If yes, I would like to see a real example of an existing asteroid, if possible some calculations, and.

Question Meteorologists classify fronts based on: thermal and moisture characteristics of the airmasses the direction of movement of the airmasses whether the airmasses are in contact with the ground or can only be found aloft (a) and (b) only are correct. (a), (b), and (c) are all correct. If you examine.

Question Meteors from space onen turn here stratopause Temperature (C) a Which station has the higher surface temperature? 14, How much does pressure dron when you move from 2 km to 4 km at Key West? Which station hasthe higher emperature 15. How much doe pressure drop when you move 8.

Question Research the use of the Doppler effect in the study of astronomy. What is its role in the big bang theory? How is it used to detect planets around other stars? To study the motions of galaxies? .

Question Is there some form of liquid on Titan? If so, what? Is there any evidence for sedimentary rocks on Titan? (or would we even expect them?) .

Question Largest object known to orbit the sun completely beyond the Kuiper belt: Orcus Quaoar Sedna Varuna   .

Question IV. Match the following types of binaries. 1. one star fills its Roche lobe a. detached 2. both stars overfill their Roche b. semi-detached lobes C. contact 3. neither star fills its Roche lobe overcontact 4. both stars fill their Roche lobes True/False 1. An evolutionary track charts a star.

Question The rapid expansion and then explosion of a red giant is called a: A, neutron star B. white dwarf C. pulsar D, black hole E. supernova 35, A supermova A. Is a small galaxy B. Throws dust and gas into space C Is a small star D. Is an exploded.

Question Once the spaceship reached the Galactic Center and set up their new stationary base there, the crew of the spaceship would measure the distance from the Earth to the Galactic Center to be Select one: a. Less than 26,000 ly b. 26,000 ly c. More than 26,000 ly .

Question In the uranium ore that is naturally found in the earth, about how much is 238U and how much is 235U? 97% 238U and 3% 235U 1% 238U and 99% 235U 99% 238U and 1% 235U 10% 238U and 90% 235U .

Question Introduction: It took over 1,000 years for people to acknowledge the world was round. It took 600 years for the British to understand the metric system. Evolution (still in debate by some) began to be accepted about 200 years ago. It took about 50 years for the theory of plate.

Question What are the facts or indirect observations that may validate this comet cloud theory? Collateral to this question, is it easy to observe these indirect facts, and is there any special way to observe these Oort comets to validate the theory? Is it acceptable to say there is no cloud and just.

Question Imagine that a new telescope has returned the first detailed pictures of the surface of an extrasolar planet. The planet is a large terrestrial world orbiting just inside the frost line of a relatively old star. The planets surface is icy and almost entirely covered in craters, with long cliffs.

Question OB associations and other young stellar objects are indeed located mostly in spiral arms. How come we find most of OB associations in spiral arms?   .

Question Planetesimals that formed beyond Neptune populated the: asteriod belt kuiper belt oort cloud B and C .

Question Our Moon is the largest moon in the Solar System. The term "retrograde motion" refers to a reversal in the apparent direction of travel of a planet, relative to the background stars.   .

Question Imagine if Earth rotated in the opposite direction than it does now, but still had the same sidereal rotation period. Its orbit is unchanged. How long would the Earth's solar day be if that were true? .

Question How do we know the Milky Way Galaxy is disc shaped (like a hockey puck)?   .

Question 1. On any clear (dark) night away from a cities light pollution) how many stars can any person count in the night sky above, say, the northern hemisphere or the southern hemisphere (but not bothy? a) 1,000 b) 3,000 c) 4,000 d) 5,000 e) 6,000 .

Question In the movie The Avengers 2: Age of Ultron, the Earth is threatened by a floating city in the sky that Ultron wants to drop from maximum height. The surrounding area is saved when the city starts crumbling apart and the rubble falls down on the ground below. Why would.

Question Part A Item 6 Find the semi-major axis of this comet's orbit Express your answer using two significant figures. One of the brightest comets of the 20th century was Comet Hyakutake, which passed close to the sun in early 1996. The orbital period of this comet is estimated to be.

Question How many satellites, including spares, are in the NAVSTAR system? Minimum, how many satellites need to be tracked to find a feature position?   .

Question Most asteroids are probably material from the early solar system that never formed into a planet the remains of an exploded planet that once orbited between Mars and Jupiter material that was captured by the Sun as it passed close to the Sun the remains of comets that have lost their volatile material .

Question In a parallel universe, a spaceship is traveling from Earth to a star that is 1 kiloparsec (kpc) away (1kpc u 3.26 · 103 light years). Each millennium the spaceship covers a distance of .01kpc. However, in each millennium, the universe expands uniformly and the space between the star and.

Question How do we use Cepheids to measure the distances to galaxies?   .