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Astronomy
Page 8
Questions (9,627)
What five object were found in the sky on February 5, 2014 at 9 pm.
1 answer
asked by
Ann
410 views
Why is the portion of Venus opposite the direction of the Sun not apparent.
1 answer
asked by
Barbara
376 views
Why is the portion of the Moon opposite the direction of the Sun not apparent?
1 answer
asked by
Barbara
300 views
Why is it possible to see Mercury at 6:45 pm on February 5, 2014?
1 answer
asked by
Carol
312 views
How far will Venus be from Earth on February 19, 2014?
1 answer
asked by
Carol
349 views
What type of spectrum is sunlight?
1 answer
asked by
Barbara
353 views
How can Google Earth be used to access the size of the Earth?
1 answer
asked by
Barbara
372 views
Imagine you are on some far away planetary system looking for planets in the galactic neighborhood and you spot our sun in your
1 answer
asked by
qwerty
417 views
How close to the sun Ganymede would have to be in order to hold water in its atmosphere. (in AU)
1 answer
asked by
qwerty
362 views
Consider dropping a Professor with an estimated mass of 80 kg from a safe, large distance, onto a SMBH with a mass of
1 answer
asked by
keitanako
386 views
Why are there multiple lenses cemented together to form the objective lens and the eyepiece lens?
1 answer
asked by
Rashida
307 views
Rain was once common on Mars.
Probably true Maybe/unclear Probably false
1 answer
asked by
qwerty
333 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
424 views
True or False? Galaxies are distributed randomly and approximately uniformly in space.
1 answer
asked by
querty
407 views
True or False? The first galaxies formed in the regions where dark matter density was highest.
1 answer
asked by
querty
321 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
356 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
408 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
382 views
How do astronomers know whether they are seeing planets or stars when they are distant?
1 answer
asked by
Ben
399 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!
398 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
388 views
F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =
1 answer
asked by
Anne
350 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
340 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
325 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
408 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
360 views
How much energy does the Earth receive from the Sun?
1 answer
asked by
Al
317 views
How much of the energy that the Earth receives from the Sun is reflected out into space?
1 answer
asked by
Al
189 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
159 views
On Earth, do we always see half of the Moon illuminated
1 answer
asked by
Sarah
140 views
What causes Cosmic Microwaves Background Radiation (CMB)?
2 answers
asked by
d
83 views
Is the universe getting bigger or smaller
1 answer
asked by
d
50 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
47 views
Which if these would be difficult to test scientifically
2 answers
asked by
d
44 views
What is the force is responsible for crushing or collapsing star?
4 answers
asked by
d
57 views
The hottest stars are what color?
1 answer
asked by
d
55 views
What type of galaxy is the oldest
1 answer
asked by
d
60 views
What is the cental, deepest point of a black hole called
1 answer
asked by
d
47 views
What is the industry title given to all government and commercial travel in the air and space
1 answer
asked by
d
50 views
What team is he only one that gets to communicate directly with space personnel on a mission
1 answer
asked by
d
51 views
An eclipse occurs when some celestial body in the heavens moves into the shadow of another celestial body. Earth has two types
5 answers
asked by
Anonymous
3,129 views
Which statement best describes the movement of galaxies in the universe?
Galaxies are moving away from each other, with galaxies
9 answers
asked by
Connexus 6th Grade
3,251 views
The radius of the sun is 695 500 km
What is its approximate volume written in Scientific notation?
6 answers
asked by
Joanne
5,025 views
The earth is on average 150million km from the sun.calculate its average speed in orbit.
1 answer
asked by
arsema
259 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
5,099 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
2,324 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
17,573 views
Why is an extra day added to February every four years?
1 answer
asked by
Anonymous
346 views
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