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Science-Help-Universe/Stars

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Science-Universe and Stars
what s the osc illating theory of universe? the oscilaating theory of the universe is the theory on the universe expanding. The gravitational pull of all the galaxies plus whatever the other matter existed in the universe would be great enough to slow down that expansion or ...

Universe and the Stars
what s the osc illating theory of universe? the oscilaating theory of the universe is the theory on the universe expanding. The gravitational pull of all the galaxies plus whatever the other matter existed in the universe would be great enough to slow down that expansion or ...

Science-Universe and Stars
Now i have to conpare the oscilating theory with the expanding universe theory. is the expanding universe theory referring to the big bang? I am sort of stumped on this, your help will be greatly appreciated, thanks

science
which of the following possibly outcomes regarding the universe do scientists think is most likely ? a) the universe will continue to expand b) the universe has completed its expansion c) the universe will start shrinking soon d) the universe is already shrinking

science
which of the statements below is true? a) the stars in a galaxy are held together by gravity b) Stars in a galaxy slowly rotate around a center c) The Milky Way is the only galaxy in the universe d)All of the above just need to know if my answer is correct or wrong d

physics
suppose that there are 1.9*10^25 stars in the universe. how many moles of stars would this be?

Science
Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and galaxies in km. Your ...

Science
Y r the distances to the planets given in km, while the distances to stars & galaxies r given in light years? I am really stumped on this quest. I think because the universe is so huge that it would be way too dificult to measure distances to stars and galaxies in km. Your ...

Universe and Stars
As u look at the stars that re beyond and farther away, what occurs to the angle measured at earth? at what point will this method no longer work? Someone please help explain

Science-Help-Universe/Stars
Can someone please check my previous science posts. I think that I only had one which no one responded to. It is latest one, and I posted it 2 times, thanks in advance :-)

science
Geocentric" means that the earth is the center of the unvierse, including the sun, the moon, the planets, and all the stars. Is the universe geocentric? yes no yes

Cosmology
Which of these is NOT a good estimate of the age of the universe? * Decay times of 238U and 232Th in metal-poor stars. * Isochrone fits for globular clusters. * Ages of the faintest white dwarfs. * Ages of the hottest main-sequence stars in distant galaxies.

science
how early south africans incorporated the stars into their world, explaining how they used the stars to mark seasons and events and retelling some legends and stories linked with specific stars and constellations

science
Why can certain stars sometimes be identified as eclipsing binary stars? A. They are brighter than any single star. B. They are all white dwarfs C. They become dimmer at regular intervals. D. They are cool red stars. Is the answer C?

Science-Repost-Universe&Stars
Give 2 reasons y elliptical galaxies are considered to be older & more evolved than spiral galaxies. They are considered to be older because they have little instellar matter and because they rarely form new stars like the other galaxies do. They seem to be more evolved than ...

science (universe)
describe the big bang theory about the origin of the universe.

science !!
1. how do scientists classify stars? by size distance and color by size distance and brightness by color brightness and distance by size brightness and temperature 2. which of The following factors determines how long is Star will live a stars color stars mass the stars ...

Science 5
What are the characteristics of globular cluster stars? A.no stars as hot as our Sun B.old age and hundreds of thousands to millions of member stars C.no main sequence stars left, with billions of member stars D.a few hundred stars, most still on the main sequence E.hundreds ...

science
An H-R diagram? Answer Are Is a map of the position of the stars Graphs stars according to their size and distance List every known star Graphs a sample of stars according to surface temperature and absolute brightness Thank You

Physical science
How early did s.a incorporated the stars into their world explaing how they used stars to mark seasons and events events and retelling some legends and some stories linked with specific stars and constellations

Science - History
Why do you think church authorities forced Galileo to deny his ideas on the universe? To point out, Galileo was the first guy who believed that the universe was heliocentric, and when he tried to convince others, he was tortured, so he took back his words and his theory and ...

Cosmology
A curvature constant of k=0, as used in the Friedmann equation, means: * The universe is open * The universe is matter-dominated * There is no dark energy * The universe is flat

Universe and the Stars-Please Check
Give 2 reasons y elliptical galaxies are considered to be older & more evolved than spiral galaxies. They are considered to be older because they have little instellar matter and because they rarely form new stars like the other galaxies do. They seem to be more evolved than ...

Science
Do I have these correct according to the H-R Diagram? Hot (blue stars) are on the left side of the modern H-R diagram bright stars are the top of modern H-R diagram cool (red) stars are the ride side side of modern H-R diagram dim stars are the bottom of modern H-R diagram

Science
As they age, _________ stars move up and to the right on an H-R diagram? Is it the bright stars?

science
Can CMB radiation show that the Universe was accelerating at the time the CMB formed thus messuring dark energy early in the universe?

Cosmology
The solution of Olbers' Paradox is: - The universe is opaque at large scales - The universe expands - There is simply not enough starlight in the universe - Matter is clustered in such a way that the integral brightness converges

science
if you believe that the universe is geocentric, you would believe that the is the center of the universe. sun or heliocentric

science
why are stars shaped in a star form All stars are spheres. Their own gravity forces then to take that shape

physics
in what specific way does light from distant stars and galaxies tell astronomers that atoms throughout the universe have the same properties as those on earth?

Science-Universe and Stars
It says that I have to develop a concept map about the milky way. What is that? Is it like a web or something? It says that I have to develop it to understand the milky way's structure and composition.

Earth Science
True or false? ------------------------- Although there is scientific evidence and many scientific theories about the origin of the universe, how it all happened remains a question. Which statement is true? ------------------------- The perfect cosmological principle is the ...

Science
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of our ...

maTH
I NEED HELP REALLY BAD 5. Directions: Select all the correct answers. Nancy is studying constellations in science class. Two things are strongly supported by all random samples of the number of stars in a constellation. Most constellations have from three to seven stars in ...

science
What makes the subject of star formation so difficult and complex A It is so slow that no visible proof of of it exists B Star formation is too expensive to study in detail C Stars live too long to be observed from birth to death D Clouds, fragments, protostars, stars, and ...

Science
Historical models of the solar system include: A.Helliocentric,B.nebular,C.Geocentric model or earth centered universe and a _ model or sun centered universe

Science
Describe how the rotation of Earth is responsible for the movement of the stars. The rotation of earth is responsible for the movement of stars because as it rotates, objects around it rotate as well, such as planets, they appear to move through the stars because they are that...

Science-Repost
Describe how the rotation of Earth is responsible for the movement of the stars. The rotation of earth is responsible for the movement of stars because as it rotates, objects around it rotate as well, such as planets, they appear to move through the stars because they are that...

Science
-Explain how and when the universe formed according to the big bang theory? -Explain how and when our solar system formed? -Describe one observation astronomers use to show that the universe is Expanding?

Science-Repost-Universe&Stars
What does it mean by the Local Group of galaxies? The Local Group of galaxies are a group of around 2 dozen galaxies. It is the group to which our galaxy belongs. All the galaxies are clustered together in this group. They are all very near eachother.

science
Most stars we see are on the main sequence. Stars spend most of their lives consuming their initial stock of hydrogen. Is there a connection between these two statements? If so, what is it?

science
Some theoriests say that in the inflationary period, the scale of the universe increased by a factore of 1050. Suppose your height were to increase by a factore of 1050. How tall would you be? Express your answer in light-years and compare it to the size of the observable ...

Physical Science
How can we talk about the evolution of stars over billions of years when human beings have been observing stars for only a few thousand years?

physics
Imagine a parallel universe in which the electric force has the same properties as in our universe but there is no gravity. In this parallel universe, the sun carries charge Q, the earth carries charge −Q, and the electric attraction between them keeps the earth in orbit...

Theories in Science
Why are theories "not proven"? Typically because they involve observations that are beyond our limits. Speculating about the universe is theory because of the size of the universe. Similarly, wetheorize about sub-atomic particles because we can't see what exactly is taking ...

Science
Drew spends one weekend each month at his grandparents farm.He enjoys loking at the stars in the night sky with his grandfathers tetscope. Drew is a careful observer of the stars and he notices that the stars in the night sky are in a different location in the sky each time he...

space
How early south africans incorporated the stars into their world,explaining how they used the stars to mark seasons and events and retelling some legends and stories linked with specific stars and constellations

Physics
two stars with equal mass of 4.0x10^15 kg are separated by a distance of 2 km. They are moving in circular obits around the middle between the two stars. What is the speed of the stars?

physics
Two stars with masses 2.75 x 10^30 kg and 5.92 x 10^30 kg form a binary system. If the two stars have an average separation of 7.28×10^8 km, compute the magnitude of the gravitational force in Newtons between the stars. Express your result in scientific notation and to three ...

Science need help
Astronomers believe that the biggest stars in the Galaxy may be a hundred times more massive than the Sun, but are a million times brighter. Would you expect such stars to have longer, shorter or comparable lifetimes to that of the Sun?

Cosmology
How do we explore the large-scale structure of the Universe in the modern day? - Using large spectroscopic redshift surveys. - By accurately measuring positions of nearby galaxies. - By observing galaxies in the Local Supercluster. - By studying clusters of stars in the Milky Way

science
k .. how are elements formed in stars? i have exam tomorrow ..and i need th annswer!!! THANKS The gas from which they formed had been seeded with the heavy elements formed from previous giant stars. Nucleosynthesis--wikipedia

thermodynamics
Which of these statements are in accord with the three laws of thermodynamics? -A-The entropy of the universe never decreases -B-A nonspontaneous process can occur if it is coupled to a process which is sufficiently spontaneous -C-The temperature of the universe stays the same...

Science: Astronomy
Why can't we use solar type stars as spiral tracers? What type of stars make good spiral tracers? Why? What characteristics do they have to perform this function?

physics
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of our ...

Science
Have I matched the right Scientists with these famous sayings: Scientists: Ptolemy, Kepler, Copernicus, Newton, Galileo, Brahe & Hubble. 1)"I've finally worked out an explanation as to why planets orbit the sun and moons orbit planets. It is gravity that keeps an object in ...

Physics
Three identical stars of mass M form an equilateral triangle that rotates around the triangle's center as the stars move in a common circle about that center. The triangle has edge length L. What is the speed of the stars?

physics
A star of mass 2.0 1031 kg that is 4.8 1020 m from the center of a galaxy revolves around that center once every 4.2 108 years. Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of this star, and the ...

Science Question
How might the most common occurring stars be described, based on our stellar neighborhood? A. White Dwarfs B. K giants C. A main sequence D. M main sequence The most common stars are Red Dwarfs. I don't like the answer choices. Most of them are M type stars. To heat up one kg ...

science
On a clear night, Ram correctly identified some clouds among the stars as the Milky Way. What part of the Milky Way was MOST visible to Ram? a]asteroids b]dust c]planets d]stars I think it is ethier b or d. Please help. Appreciative. ;]

physics
Three identical stars of mass M = 6.4 x 1030 kg form an equilateral triangle that rotates around the triangle's center as the stars move in a common circle about that center. The triangle has edge length L = 5.0 x 1010 m. What is the speed of the stars?

Philosophy
Leibniz presents monads as simple substances. Monads are infinite in number, unextended, and windowless, and each mirrors the universe. As a consequence, Leibniz contends that the universe manifests both order and perfection. Why does Leibniz give monads these characteristics...

science
When was the origin of the universe?

physics
mc030-1.jpg Two stars are bound together by gravity. The larger star has four times the mass of the smaller star. Which diagram best illustrates the orbital motion of the two stars? (Note: the stars are shown much larger than they really are compared to the

astronomy
Can CMB show that the universe was accelerating at the time the CMB formed thus measuring dark energy early in the universe?

astronomy
Can CMB show that the universe was accelerating at the time the CMB formed thus measuring dark energy early in the universe?

science
what is the entire pysical universe

Physics
Two stars are 8 light years from earth (a light year is the distance light travels in one year). The 550 nm light from the two stars can be barely distinguished in the diffraction pattern of 90 cm wide single slit. How far apart are the stars?

science
what is the entire physical universe called?

science
What is name of entire physical universe?

Science
1. How did life begin? 2. Are we alone in the universe?

Science 4
Most stars probably formed A.alone B.in intergalactic space, then were swept up into the Galaxy C.in clusters in the Galaxy's spiral arms D.from planetary nebulae E.in the galactic Nucleus, then migrated outward later I'd guess roughly C ...but im no scientist. check this out ...

science
what eventually happens to medium mass stars? i know small stars don't die out as quickly as more massive ones, but i'm having a hard time figuring out what happens to the medium mass ones. thank you.

Astronomy
Why didn’t the Universe collapse into a black hole in the past when there was so much matter in such a small space? (a) Most of the particles in the early Universe were unstable and decayed before a black hole could form. By the time only stable particles were left (protons...

Science 3
There are a lot more M2V stars than M2Ib stars. True False http://en.wikipedia.org/wiki/Stellar_classification

Corporate Tax
Alan just immigrated to Canada and owns STARS ltd (US company). Alan owned 100% of shares to STARS ltd. STARS ltd. was incorporated in the US in 2004. Alan wanted to know if he should use STARS ltd or a new company to carry on his business in Canada? He's also not sure whether...

science
Which of the following pairs of objects would have the strongest gravitational pull? two buildings in the same city ← two tall buildings in different cities two stars very far away from each other two stars very close to each other my answer is c

Science
What is the arrangement of the objects in the universe from largest to smallest

science
How does Marie Curie help us understand the universe in which we live?

Science
Hoy can i name the entire physical universe?

sience
What are the smallest stars?what are the medium and the largest stars?

physical science
Which of the following pairs of objects would have the strongest gravitational pull? two buildings in the same city ← two tall buildings in different cities two stars very far away from each other two stars very close to each other my answer is c

Science
How has Marie Curie helped us understand the universe in which we live?

Physics help
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of our ...

Ecology
Menge and colleagues performed experiments in which they exposed some populations of mussels to sea stars and excluded sea stars from other mussel populations. Suppose that the sea star population consists of 20 individuals and the two populations of mussels are of the same ...

Biology
Menge and colleagues performed experiments in which they exposed some populations of mussels to sea stars and excluded sea stars from other mussel populations. Suppose that the sea star population consists of 20 individuals and the two populations of mussels are of the same ...

Astronomy
1. When comparing the sizes of stars, our Sun is: a.) the largest star discovered to date b.)one of the larger stars discovered to date c.)medium size as compared to other stars d.)one of the smallest stars discovered to date My answer: c or d 2. What information can ...

physics
Two stars are 3.80 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.19 m and just detects these stars as separate objects. Assume that light of wavelength 550 nm is being observed. Also assume that diffraction effects...

physics
Two stars are 2.4 × 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.72 m and just detects these stars as separate objects. Assume that light of wavelength 590 nm is being observed. Also, assume that diffraction ...

physics
Two stars are 4.40 1011 m apart and are equally distant from the earth. A telescope has an objective lens with a diameter of 1.03 m and just detects these stars as separate objects. Assume that light of wavelength 550 nm is being observed. Also assume that diffraction effects...

science help
An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second star. Which of the following is a valid conclusion about the first star? It is larger than the second star. It is smaller than the second star. It is ...

Mathematics
The points scored in a basketball game by the individual players of two teams, High Rangers and Rising Stars, is recorded during the game. After the game, the manager found that the range for the High Rangers is 20 points and the range for the Rising Stars is 4 points. Which ...

science help PLS
An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second star. Which of the following is a valid conclusion about the first star? It is larger than the second star. It is smaller than the second star. It is ...

Physics
Two equal-mass stars orbit their centre of mass. The distance between the stars (measured from the centre of mass of each) is 1 AU. What is the period of revolution in years? How much energy would be required to unbind these stars if they each have the same mass as the sun? ...

American Government
"Universe" is a term used to describe a. a politician's constituency b. the entire group of persons in a given poll. c. the entire group of persons whose opinions a poll seeks to measure d. the group that supports the activities of an interest group A universe or population is...

Science ( Need help really bad Please!)
An object's weight is dependent upon its location in the universe. Why is this true? A. This is true because weight is the magnitude of gravitational force acting on an object, and since gravitational force varies in different places in the universe, weight also varies. B. ...

Science
Considering matterand energy together the smallest component of the universe seems to be

science
what is the theory that the universe began in a giant explosion (two words) it has 7 letters

Science
Describe one observation astronomers use to show that the universe is expanding

science
How does a stars life begin ?

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