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Feedback Q&A on Astronomy

by Ron Kurtus

Readers have sent in a total of 303 comments and questions on Astronomy issues. They are listed according to date.

You can read them to further your understanding of the subject.

List of next 10 letters




Keplers Laws Wants permission to use image USA
General Want to study Astronomy South Africa
Resources Suggested resource USA
General Pulses of radiation Bangladesh
Constellations Constellations and religion USA
Moon Four characteristics of the moon South Africa
General Are there other universes? Pakistan
Moon Put solar panels on the Moon USA
Observations in Astronomy Why study the night sky? Australia
General Topics Are there a lot of galaxies? India

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First 10 letters

Wants permission to use image

Topic: Keplers Laws


January 19, 2015

I am writing a book on Moon and space travel. The book is meant for promoting science learning among young adults. An Indian publisher has agreed to publish the book. I want to use the image from your article depicting Kepler's second law. Please give me your permission and tell me how would you like me to write credits.
Thank you
Ramesh Shishu, P.hD.

Ramesh - USA



Congratulations on writing your book.

Yes, you have permission to use the image. I would appreciate it if you would state: Permission from Ron Kurtus, School for Champions ( or something to that effect.

Note that I have updated the image to improve its resolution. I you want, I can send you a higher resolution file as a JPEG that would be more appropriate for a print publication.

Best wishes for success with your book.

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Want to study Astronomy

Topic: General


January 5, 2015

hai i wnt to du astronomyas well as to study in the field.but im little.bit suffrng in mAths frm thr whle year in grd11 0n 2015 bt now im dng grd 12 ths how cn i imprve

Sandile - South Africa



Astronomy is an interesting subject. It is good that you want to study it. See our lessons on Astronomy for some basic information.

Although maths are important in Astronomy, you can still learn much by studying the physical aspects of the subject.

You can get some good information from the Astronautical Society of Southern Africa, including information about scholarships. There are also branches in various South Africa cities.

Best wishes for success in your studies.

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Suggested resource

Topic: Resources


September 7, 2014


I’m a home school instructor and I took my kids to the Adler Planetarium a few weeks ago on a field trip. Our kids had fun learning about the solar system and the moon. I used this guide as a reference ( and I think it would make a good addition to your page here:

I hope this was helpful.


Sandra - USA



Thanks for the resource I added the link to the Astronomy Resources page.

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Pulses of radiation

Topic: General


September 6, 2014

suppose there is a distant celestial source which emits pulses of radiation at regular intervals of exactly 100 seconds apart. many pulses would have been sent to the earth in one day (24hours)
2.if 50 such pulses were recorded for a spacecraft to reach a predetermined destination,what is this time interval in seconds?

monika - Bangladesh



To find the number of pulses in one day, convert 24 hours to seconds: 24 * 60 min/hr * 60 sec/min = 86400 sec. Divide by 100 second to get number of pulses: 86400/100 = 846 pulses.

The time interval for 50 pulses is 50 * 100 sec = 5000 seconds.

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Constellations and religion

Topic: Constellations


July 9, 2014

School for Champions; I do not know if you have any religious beliefs or not. I am a Christian who is interested in astronomy from a more Biblical point of view.

I was born and raised up in Kermit, Texas where you can see the stars very clearly due to the reduction of big city lights. I used to climb to the top of our house so I could see the stars better even on the horizon. My mother would call me in because it would be getting so late. I am now an older man entering those so-called golden years with no gold!

I know how to read ancient Hebrew hieroglyphs and I noticed that some of the constellations or asterisms which circle close to the North Star looked like some of these hieroglyphs. I had often wondered why God put both a little dipper and a big dipper up in our night skies? Now I know that most of these constellations are not drawn as God intended them according to man! The northern cross is an obvious Christian emblem but is dismissed by the non-believers as just a pattern by luck.

Google, Aquilla Fleetwood, Night Signs. Click on to any site to see these constellations as God intended them. They are pointing us to Christ in ancient Hebrew hieroglyphic word picture form. Google, Jeff Benner, the North Star, for his amazing information. Google, Dr. Frank T. Seekins, Hebrew Word Pictures, for his information about this ancient Hebrew hieroglyphic writings and how Christ is embedded within it.

Indeed, the stars are for signs and the heavens declare the glory of God. Thanks, Aquilla (little eagle)

Aquilla - USA



You are fortunate to be in an area to be able to view the stars at night without the glare from city lights.

Although the Bible states that God created the heavens and the earth. I don't believe there area any Bible phrases indicating the constellations were meant to represent anything, except that man could view the stars and see they are the work of His hands.

Since the stars have been in motion and change their position with respect to the earth, many constellations have changed positions and shape over the years. The symbolism of a constellation may be a result of man's faith.

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Four characteristics of the moon

Topic: Moon


June 10, 2014

I am asking for 4 characteristics of the moon

sello - South Africa



The characteristics are listed in Characteristics of our Moon.

You could select size, mass, density, as well as the lack of Oxygen, and lower gravity than Earth.

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Are there other universes?

Topic: General


May 26, 2014

is there any other universe?

Akhtar - Pakistan



It is quite possible that there are other universes. See: Theory of Multiple Universes (Multiverse) for more information.

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Put solar panels on the Moon

Topic: Moon


April 22, 2014

Actually this has to do with solar power. Why not set up a large array of solar panels on the moon, and send the energy back to earth? By using microwave or laser beam technology. We would have an abundance of solar power (electricity). Get rid of nuclear power.

Mark - USA



Although you could create electricity with the solar panels on the Moon, there would be no good way to send that energy back to the Earth. Perhaps by creating microwaves and sending them back to Earth and then converting the energy to electricity might work. But that is a round-about way of getting the energy and would be very expensive and may not be effective.

There had been talk about placing huge reflective panels in orbit to reflect light to the Earth at night. That idea was dropped a number of years ago as not being practical.

The best solution is using solar panels on Earth, such that the distances are not so immense.

It is great that you are thinking of creative ways to find clean energy. Keep coming up with new ideas.

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Why study the night sky?

Topic: Observations in Astronomy


April 4, 2014

What knowledge modern people gain from studying the night sky?

Roula - Australia



You can determine direction by observing the stars in the night sky. For the average person, examining the stars and planets through a telescope can be enlightening. Modern scientists can seek out new galaxies and observe events to help understand the physics of the Universe.

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Are there a lot of galaxies?

Topic: General Topics


March 2, 2014

Is in universe there are lot of galaxies?

shital - India



In the Universe, there are billions of galaxies, and within each galaxy, there are billions of stars.

It is hard to imagine such large numbers.

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