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Questions (262)
Arcturus is about half as hot as the Sun but is about 100 times more luminous. What is its radius campared to the sun.
If
1 answer
asked by
rohit
627 views
For a few of the largest stars, direct measurements of their disks are possible.
True False
1 answer
asked by
Liz
335 views
What are the characteristics of globular cluster stars?
A.no stars as hot as our Sun B.old age and hundreds of thousands to
1 answer
asked by
Liz
868 views
While Sirius, the Dog Star, is type AO, a start just a step hotter than M0 is a related what?
A.M1 B.K9 C.F5 D.AOK E.B9 B. K9 K9
1 answer
asked by
Liz
503 views
Which of the following stars has the hottest core?
Group of answer choices a red giant ( rst phase - not an AGB star) a main
1 answer
asked by
Mark
44 views
nearest star distance of 4.3 light years proxima centauri is the nearest star to our solar system. what is the distance to
3 answers
asked by
help plz
2,268 views
If the sun's mass is about average, how many stars are there in the Milky Way galaxy?
(This is all the information given in the
5 answers
asked by
Anonymous
2,240 views
1) Why can certain stars sometimes be identified as eclipsing binary stars?
Answer) B. They become dimmer at regular intervals 2)
5 answers
asked by
Skater
1,551 views
A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 6.2 x 1020 m, and the angular
3 answers
asked by
Maggie
1,505 views
What is a small, low-mass remnant star that has exhausted all the fuel to perform nuclear fusion?
1 answer
asked by
Blue
33 views
What does the H-R diagram represent?
(1 point) a star's size and distance from the Sun. a star's static levels and its
1 answer
asked by
Blue
53 views
Alicia is an avid stargazer and noticed that, over time, one of her favorite stars appears to be switching locations across the
1 answer
asked by
Blue
28 views
The layer of a star is very dense and hot, while the layer of a star is much cooler and less dense.
1 answer
asked by
Blue
31 views
What is the name of the star that is the closest to Earth?
(1 point) Betelgeuse Antares the Sun the Moon
1 answer
asked by
Blue
25 views
a star has a size of 0.1 solar radius. How many times larger is the sun than this star
4 answers
asked by
asia
1,371 views
The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.Which of
7 answers
asked by
jessica thompson
1,359 views
Which of these stars of the HR diagram have the highest luminosity?
Group of answer choices giants dwarfs brown dwarfs
1 answer
asked anonymously
51 views
Which of the following is NOT true about a red giant star?
Group of answer choices low temperature high temperature large radius
1 answer
asked by
Mark
32 views
Star A has a parallax angle that is 2 times bigger as star B. They both appear to be the same brightness, how does the
1 answer
asked by
Mark
40 views
Edwin used a
telescope from the 1920s and observes fuzzy blobs of light off in the distance. What is Edwin seeing? (1 point)
1 answer
asked by
Blue
38 views
There are stars located in the center bowl of the Milky Way and the spiral arms of the Milky Way. What is the difference between
1 answer
asked anonymously
43 views
There are stars located in the center bulge of the Milky Way and the spiral arms of the Milky Way. What is the difference
1 answer
asked anonymously
45 views
Suppose that you can just barely see a certain star that is at a distance of 100 light years. How far away must a star that is 4
2 answers
asked by
anastasia
887 views
Star Right Ascension Declination
Aldebaran 4h 36m 16¢X 31' Miaplacidus 9h 13m -69¢X 42' Deneb 20h 41m 45¢X 20' Regulus 10h 08m
4 answers
asked by
keitanako
772 views
A star the size of the sun has a mass 8 times as great. It rotates on its axis once every 12 days. It then collapses into a
1 answer
asked by
ashley
771 views
A protostar has a high enough___to become a star.
A. volume B. mass C. temperature D. brightness Is the answer B? Thanks in
7 answers
asked by
Katy
767 views
The nearest star to our solar system, is 4.3 light-years away Express this distance in miles in scientific notation
3 answers
asked by
nathan
749 views
Why does the Earth get more energy from the Sun compared to any other star?
•The Sun is much closer to Earth. The next closest
2 answers
asked by
Taylor P.
742 views
Betelgeuse is a red, giant star that guided caravans across the deserts of Arabia in the coolness of night. Betelgeuse is
2 answers
asked by
HELP ME PLEASE
715 views
Three identical stars of mass M = 6.4 x 1030 kg form an equilateral triangle that rotates around the triangle's center as the
1 answer
asked by
jr
713 views
Using various telescopes, astronomers discovered a giant star that is 100 times larger than the Sun, and is very hot. It is
2 answers
asked by
payton
609 views
Explain the idea of parallaz. The closet star to the Sun, Proxima Centauri, is 4.2 light years away from us. What is its
3 answers
asked by
Kaitlyn
593 views
with 1*10 to the power of 22 stars in the sky. I can't put 22 in small form above 10, so that's why I'm wording it by saying to
3 answers
asked by
Sara
562 views
How does a white dwarf compare to our sun as it exists now?
How does a white dwarf compare to our sun as it exists now? It has a
1 answer
asked anonymously
18 views
How is a neutron star different from a regular star?
How is a neutron star different from a regular star? It has an almost
4 answers
asked anonymously
42 views
Which characteristics will apply to the Sun after it leaves the main sequence?
Stars in the Universe fit into one of the four
1 answer
asked anonymously
35 views
Rigel, Polaris, and Betelgeuse are classified as Supergiants on the HR diagram. What characteristics do all these stars have in
1 answer
asked anonymously
28 views
Our Sun is the biggest and brightest star.
Our Sun is the biggest and brightest star. True False
1 answer
asked anonymously
19 views
What type of star is the Sun?
2 answers
asked by
gio
522 views
Polaris is also known as the North Star. Antares has the same apparent magnatude as Polaris. Explain how this can be given that
2 answers
asked by
Jennifer
553 views
Suppose that instead of our sun, our star were a giant star such as Betelgeuse. The mass of Betelgeuse is estimated to be about
2 answers
asked by
Matt
543 views
How long does it take a protostar with one solar mass to become a main sequence star? 1 or 3 or 10 or 30 or 100 million years?
2 answers
asked by
Steve
498 views
which if the following stars is brightest Nova, white dwarf, red giant, or main sequence
2 answers
asked by
tia
503 views
What star other than the sun is closest to the earth?
Proxima Centauri, which is part of the alpha Centauri three-star system
1 answer
asked by
sally
537 views
In which quadrant does star D lie
1 answer
asked by
Cat
12 views
White dwarf stars have been observed with a surface temperature as hot as 200,000 o C. What is the wavelength of the maximum
1 answer
asked by
Paul
480 views
Imagine that you are on a mission to explore a pulsar type star. What will you find there on pulsars and pulsar planets. Using
1 answer
asked by
Ron
486 views
White dwarf stars have been observed with a surface temperature as hot as 200,000 o C. What is the wavelength of the maximum
1 answer
asked by
Tom
452 views
The color of a star could be an indication of the
a) rate of fusion reaction b) age of the star c) size of a star d) all the
3 answers
asked by
babe
445 views
which statement about the sun compares with other stars is correct?
A red supergiant is bigger hotter and gives off more light
1 answer
asked anonymously
114 views
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Parent Categories (10)
Astronomical Objects
Astronomy
Astronomy and Space
Astrophysics
Celestial Bodies
Celestial Bodies and Objects
Celestial Objects
Milky Way
Stellar Objects
Symbolism