402 Answered Questions for the topic astronomy

Astronomy Math Algebra

08/26/19

pproximately how long would she take to drive from the Sun to Pluto in years?
Ondrea could drive a Jetson's flying car at a constant speed of 180.0 km/hr across oceans and space, approximately how long would she take to drive from the Sun to Pluto in years? (Assume Pluto is... more
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Astronomy Math Algebra

08/26/19

how fast is the planet traveling around the galaxy in km/hr?

If a planet was located approximately 29 thousand light-years from the center of a galaxy and orbits that center once every 290 million years, how fast is the planet traveling around the galaxy in... more
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Astronomy Math Algebra

08/26/19

If Jim could drive a Jetson's flying car at a constant speed of 240 km/hr across oceans and space, approximately how long would he take to drive to a nearby star that is 9.2 light-years away?

If Jim could drive a Jetson's flying car at a constant speed of 240 km/hr across oceans and space, approximately how long (in millions of years, in 106 years) would he take to drive to a nearby... more
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Astronomy

08/26/19

MY QUESTION IS BELOW IT WAS TOO LONG PLEASE HELP
If Jim could drive a Jetson's flying car at a constant speed of 290 km/hr across oceans and space, approximately how long (in millions of years, in 106 years) would he take to drive to a nearby... more
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Astronomy

08/20/19

How does a planet gain it's speed? Do all celestial bodies go in an elliptical orbit?
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Astronomy

08/15/19

How do planets and other celestial bodies stay in orbits? Shouldn't all the planets go towards the sun? How are we staying in orbits?
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Astronomy Astrophysics

08/05/19

Based on astronomy topic what do you mean by an e-folding time of the main stellar population model?
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Astronomy Chemistry

08/04/19

If you had a mole of sheets of paper stacked on top of each other, how many round trips to the Moon could you make?
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Astronomy World History

07/31/19

Why did Galileo’s heliocentric theory cause great controversy during the scientific revolution?
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07/28/19

What is the Big Bang
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Astronomy

07/12/19

Formation of Stars
What external factors are necessary to initiate/trigger the formation of a star, and as a consequence, a possible planetary system? Provide with pros and cons in regard to the necessity of each... more
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Astronomy Math Astrophysics

07/11/19

A comet is discovered that has an orbital period of 85 years. Determine the average distance of this comet from the Sun in AU.
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06/30/19

What is the difference between UT0, UT1 and GMT time?
Every reference I find says that they are essentially the same, which we all know really means that they are not the same, but different only by a some small amount. They also like to say that UT1... more
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Astronomy

06/30/19

Light is gathered from a distant star and one of teh spectral lines is observed at 520nm when it should be 400nm. The velocity of this star is ______km/s
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Astronomy Moon Eclipse

06/29/19

In what ways can a lunar eclipse occur?
In what ways can a lunar eclipse occur?Also, on what percentage of the Earth are they usually viewable? I am aware that there are multiple configurations that constitute a lunar eclipse (umbral,... more
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Astronomy Tides Neptune

06/29/19

Do tides occur on planets like Neptune, having water?
I mean, we experience tides here on earth because of combined effect of gravitational field of moon and sun. So I thought that tides could also occur on other planets. Let us consider Neptune where... more
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06/29/19

How is distance measured to far away stars and galaxies?
What I need is an accurate description of the methods used to determine the distance to Andromeda. The Parallax method is for nearby objects as I presume. The red shift method applies, but how do... more
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06/27/19

How did pre-Copernican astronomers accurately predict planetary position?
Copernican elements (circular orbital elements) are not very accurate. But Copernicus simplified our understanding a great deal by placing the Sun at the center of the system. Im astonished by the... more
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Astronomy Telescopes Supernova

06/26/19

What size aperature would I need to find and see the supernova in M51?
On June 2, 2011, a new supernova was identified by an amateur French astronomer in M51.What size telescope aperture would one need to have any chance of seeing this? Given the right sized scope,... more
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Astronomy Moon Eclipse

06/26/19

How can the date of lunar eclipses be calculated by hand?
How can the date of lunar eclipses be calculated? Especially without the aid of a computer.
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Astronomy Stars Galaxies

06/25/19

Solar system, visible stars and deep sky objects?
Since I've seen that galaxies are often called "deep sky objects", as opposed to individual stars, does this mean that all visible stars in the night sky actually only belong to The Milky Way... more
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06/24/19

View of the Sun from Voyager 1?
Today Voyager 1 is approximately 122 AU distance from the Sun. What does the sun look like from this distance? How much brighter does the sun appear to the naked eye compared to other stars in... more
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06/23/19

How big of a telescope to view Gliese 581g in great detail?
I've always been interested in mega sized telescopes and how big they would have to be to see exoplanets in great detail. So, Gliese 581g is 22 light years away. Could we build a telescope in space... more
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Astronomy Visible Light

06/23/19

Lunar twilight and sixth magnitude stars?
Summary: when the Moon is x degrees below the horizon, it interferes with stargazing the same as astronomical twilight would. What is x (as a function of the Moon's phase)? We define civil,... more
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Astronomy Moon Eclipse

06/23/19

Is a total solar eclipse a common phenomenon?
Is our moon "special" for creating a total solar eclipse? Is it common or rather rare for a moon to create a total solar eclipse the way our moon does, with corona and such?
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