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Astronomy
Page 7
Questions (10,000)
Rain was once common on Mars.
Probably true Maybe/unclear Probably false
1 answer
asked by
qwerty
347 views
Imagine you are in a spaceship one million km from a black hole of mass kg. Initially you are flying directly away from it at a
3 answers
asked by
qwerty
431 views
True or False? Galaxies are distributed randomly and approximately uniformly in space.
1 answer
asked by
querty
412 views
True or False? The first galaxies formed in the regions where dark matter density was highest.
1 answer
asked by
querty
328 views
What about a for a supernova in an elliptical galaxy of 10^12 solar masses and radius of 50 kpc?
Yes or No
1 answer
asked by
qwerty
362 views
Does the probability that a single-planet system shows transits increase, decrease
or stay the same if the planet has a rather
1 answer
asked by
g
414 views
Given the random orientation of planetary orbits relative to our line of sight, do you expect most or only a minority of all
1 answer
asked by
g
389 views
How do astronomers know whether they are seeing planets or stars when they are distant?
1 answer
asked by
Ben
406 views
A bicycle trip takes 50.4 seconds. What is the average speed of the bicycle?
my work: 50.4/ 680m = 13.49m/s
6 answers
asked by
Frustrated!
408 views
What would be the approximate power-law slope of the 2-point correlation function if all galaxies were situated on thin
1 answer
asked by
Annonymous
391 views
F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =
1 answer
asked by
Anne
359 views
How can I tell a north circumpolar star from a south circumpolar one based on its declination and my location?
1 answer
asked by
Anonymous
345 views
An astronomical unit can be thought of as...
a 25 light years b 19 earth years c 93 million miles d 100 billion miles
1 answer
asked by
Red
332 views
If a planet were orbiting the Sun in an orbit three times as far as its current orbit, how many times longer would it take the
1 answer
asked by
Astronomy
412 views
Which of the different telescopes designed for the following specific types of electromagnetic waves has to be at the highest
1 answer
asked by
Francis
364 views
How much energy does the Earth receive from the Sun?
1 answer
asked by
Al
326 views
How much of the energy that the Earth receives from the Sun is reflected out into space?
1 answer
asked by
Al
196 views
Of the energy received by the Earth from the Sun, and that is not reflected into space, how is it dispersed?
1 answer
asked by
Al
166 views
On Earth, do we always see half of the Moon illuminated
1 answer
asked by
Sarah
144 views
What causes Cosmic Microwaves Background Radiation (CMB)?
2 answers
asked by
d
88 views
Is the universe getting bigger or smaller
1 answer
asked by
d
56 views
Tamara is viewing an object in space and it appears to have a blueshift. What does she know about this object?
1 answer
asked by
d
51 views
Which if these would be difficult to test scientifically
2 answers
asked by
d
48 views
What is the force is responsible for crushing or collapsing star?
4 answers
asked by
d
65 views
The hottest stars are what color?
1 answer
asked by
d
61 views
What type of galaxy is the oldest
1 answer
asked by
d
67 views
What is the cental, deepest point of a black hole called
1 answer
asked by
d
52 views
What is the industry title given to all government and commercial travel in the air and space
1 answer
asked by
d
57 views
What team is he only one that gets to communicate directly with space personnel on a mission
1 answer
asked by
d
55 views
The radius of the sun is 695 500 km
What is its approximate volume written in Scientific notation?
6 answers
asked by
Joanne
5,039 views
The earth is on average 150million km from the sun.calculate its average speed in orbit.
1 answer
asked by
arsema
267 views
Which shows the stars in the correct order, from smallest in size to largest?(1 point)
white dwarf, red supergiant, Sun Sun, red
4 answers
asked by
Neko
5,122 views
If dark energy were to significantly increase or decrease, what outcome could this have on the universe?
My answer: If it
4 answers
asked by
samatha
2,336 views
How did planetesmals form planets?
A. They broke apart into smaller chunks. B. They collided and stuck together. C. They cooled
66 answers
asked by
Katty
17,595 views
Why is an extra day added to February every four years?
1 answer
asked by
Anonymous
352 views
What type of galaxy is described as revolving around a single point and has spinning arms of stars which extend from the center?
2 answers
asked anonymously
166 views
The table below compares three galaxies.
1 2 3 Type of galaxy Shape Force holding it together Type of matter present Spiral
2 answers
asked anonymously
368 views
A space body that has a main body and a tail that orbits the sun is called a
Group of answer choices comet meteor asteroid
2 answers
asked by
John B
103 views
The table below shows Herman's mass and the mass of different planets in our solar system.
If Herman were to stand on each
1 answer
asked by
kali
212 views
Given the following images, choose the one that most likely represents an O-class star.
Star A is a yellow star. Star B is a blue
5 answers
asked by
Oscar
4,350 views
How were asteroids formed? Were they just formed by melted materials in space? were they formed in the asteroid belt?
1 answer
asked by
Sara
408 views
What problems does the granulation tack model of the early solar system evolution attempt to explain
2 answers
asked anonymously
64 views
The following chart shows the gravity on each planet. Order the planets from where you would weigh the least to where you would
1 answer
asked by
kali
187 views
What season is it when the days are getting longer and the sun is hitting both hemispheres nearly equally?
Group of answer
1 answer
asked by
John B
111 views
The outermost layer of the sun's atmosphere, also emits light but only is visible as a white halo during a solar eclipse
Group of
1 answer
asked by
John B
132 views
What does this tell us about Neptune?
A. It has mass but Uranus doesn’t. B. It has more mass than Uranus. C. It has the same
1 answer
asked by
John B
100 views
Which planet orbits the fastest?
A. Mercury B. Earth C. Jupiter D. Neptune
1 answer
asked by
John B
137 views
In astronomy the term perihelion refers to the point in the orbit of an asteroid, comet, or planet when it is closest to the
2 answers
asked by
Anonymous
900 views
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