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Astrophysics
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Questions (191)
What causes the ionization of the Intergalactic Medium (IGM)?
- radiation from star-forming galaxies and quasars - residual
1 answer
asked by
qwerty
461 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
453 views
Black holes can be completely described by which three parameters?
-angular momentum, spin, and electric charge -angular
1 answer
asked by
qwerty
483 views
An X-ray binary consists of 2 stars with masses m1 (the accreting compact object) and m2 (the donor). The orbits are circular
1 answer
asked by
jennifer
453 views
A galaxy is receding from us at 27,000 km/s. What is the percentage of the speed of light the galaxy is receding from us?
1 answer
asked by
Mark
32 views
true or false
dark matter is invisible to humans
1 answer
asked by
saw
18 views
Spectra Analysis of Different Galaxies
Galaxy Redshift Blueshift Expanding Universe Shrinking Universe 1 2 3 4
1 answer
asked anonymously
31 views
Spectra Analysis of Different Galaxies
Galaxy Redshift Blueshift Expanding Universe Shrinking Universe 1 spiral ( ✔) 2
1 answer
asked anonymously
34 views
Which types of baryonic matter are most abundant in the universe?
Dark matter and dark energy Dark matter and light matter
1 answer
asked anonymously
78 views
Which process forms all elements up to and including iron, except light elements such as hydrogen and helium?(1 point)
Responses
1 answer
asked anonymously
41 views
A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small
3 answers
asked anonymously
168 views
Which process forms all elements up to and including iron, except light elements such as hydrogen and helium?(1 point)
Responses
1 answer
asked anonymously
49 views
Dark matter is purely hypothetical, because we have no way of detecting its presence.
Group of answer choices FALSE TRUE
1 answer
asked anonymously
36 views
Cosmic Microwave Background's uniform temperature 7is evidence that supports the idea that radiation is a remnant of the Big
3 answers
asked anonymously
147 views
A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small
1 answer
asked anonymously
41 views
Which process forms all elements up to and including iron, except light elements such as hydrogen and helium?(1 point)
Responses
1 answer
asked by
Josie
67 views
Do dark matter eat everything
1 answer
asked anonymously
10 views
Which of the following best defines a black hole?
Responses A A hole in the spacetime continuum and the birthplace of new stars.A
1 answer
asked anonymously
24 views
What did gravity create when 99% of the gas in the materials were gathered into the centre of a flat end disk during the
1 answer
asked anonymously
12 views
Which change in the sun is gravity would occur if the suns mass were reduced by 1/2
1 answer
asked anonymously
19 views
If something was on the “far side of the universe”. Would someone be referring to something still in the same universe but
3 answers
asked anonymously
16 views
Cosmic Microwave Background's uniform temperature 7is evidence that supports the idea that radiation is a remnant of the Big
1 answer
asked anonymously
26 views
A new planet is discovered that has twice the earths mass and twice the earths radius. On the surface of this new planet, a
1 answer
asked anonymously
28 views
The photosphere and chromosphere are typically described by which of the following characteristics?
Their extreme depths relative
1 answer
asked by
M
20 views
A) Which statements accu
Select the two correct answers. (1 point) Terentiate between dark matter and dark energy? Dark matter is
1 answer
asked by
M
27 views
The big crunch happens when the universe starts to do what
1 answer
asked anonymously
13 views
Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.
An illustration shows the spectrum
1 answer
asked by
oliver
25 views
gravity and orbits quick check
1 answer
asked by
TREY PILGRIM
21 views
Black Hole
1 answer
asked by
LuvRainy
17 views
Wanda Diaz-Merced, an astrophysicist who is blind, has developed software that can translate astrophysical data into sound. Such
1 answer
asked by
bsba
18 views
Wanda Diaz-Merced, an astrophysicist who is blind, has developed software that can translate astrophysical data into sound. Such
1 answer
asked by
bsba
14 views
Suppose a probe is sent to Europa, one of Jupiter's moons, to explore its ocean. Which discovery would make the existence of
1 answer
asked anonymously
36 views
A collection of gas and dust, that forms, new stars, or is the result of a dying star
Galaxy, star, Nebula HR diagram,
1 answer
asked by
The
17 views
How fast is it to warp space
1 answer
asked anonymously
6 views
is infinite gravity the speed of light
1 answer
asked anonymously
6 views
explain the drake equation
1 answer
asked anonymously
13 views
is timespace the same as spacetime and do they mean the same thing
1 answer
asked anonymously
5 views
Kepler's Second Law Quick Check
1 of 31 of 3 Items Question Which does Kepler’s second law state about planetary motion?(1
5 answers
asked anonymously
3 views
Which of the following causes quasars to be formed? The area becomes too concentrated with stars. Superclusters develop,
1 answer
asked anonymously
3 views
Black holes have the strongest force of gravity in the universe. True False
1 answer
asked anonymously
2 views
Consider the gravitational interactions among Earth, the sun and the moon. Does this constitute a system? If so, what are its
1 answer
asked anonymously
2 views
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Parent Categories (8)
Astronomy
Physics
Science
Science & Astronomy
Science and Astronomy
Science and Technology
Science/Physics
Space